Grade 8 Hex Head Cap Screws
Steeped in Kimball Midwest's commitment to American-made quality, our Grade 8 Hex Head cap screws are known for their superior strength and durability. They're ideal for heavy-duty applications where superior tensile strength is necessary.
1498 results
KM-USA High Head Grade 8 (USS) Hex Head Cap Screws - Zinc Plated
With a taller head for improved wrench grip, these KM‑USA High Head Grade 8 screws offer enhanced alignment in tough MRO applications. Special alloy steel delivers 150,000 PSI tensile strength, while zinc yellow plating resists corrosion. Perfect for machinery needing extra torque, they’re made in the USA for assured quality. Combine with Grade 8 washers and nuts for maximum reliability.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
25
|
380404J
|
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|
|
1/2"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
100
|
380404
|
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|
|
3/4"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
25
|
380406J
|
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|
|
3/4"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
100
|
380406
|
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|
|
1"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
25
|
380408J
|
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|
|
1"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
100
|
380408
|
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|
|
1-1/4"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
25
|
380410J
|
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|
|
1-1/4"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
100
|
380410
|
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|
|
1-1/2"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
25
|
380412J
|
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|
|
1-1/2"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
100
|
380412
|
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|
|
1-3/4"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
25
|
380414J
|
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|
|
1-3/4"
|
1/4"-20
|
Coarse
|
KM-USA High Head
|
100
|
380414
|
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|
KM-USA High Head Grade 8 (SAE) Hex Head Cap Screws - Zinc Plated
Boasting a 20% taller head for improved tool contact, these KM‑USA High Head Grade 8 Cap Screws (SAE) resist fatigue with a 150,000 PSI rating. The chrome alloy steel design supports easy alignment, while a zinc yellow finish guards against corrosion. Ideal for engine blocks, pumps, or structural assemblies, they’re 100% made in the USA. Use matching washers and nuts for reliable, long‑lasting performance.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
25
|
390404J
|
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|
|
1/2"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
100
|
390404
|
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|
|
3/4"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
25
|
390406J
|
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|
|
3/4"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
100
|
390406
|
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|
|
1"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
25
|
390408J
|
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|
|
1"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
100
|
390408
|
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|
|
1-1/4"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
25
|
390410J
|
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|
|
1-1/4"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
100
|
390410
|
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|
|
1-1/2"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
25
|
390412J
|
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|
|
1-1/2"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
100
|
390412
|
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|
|
1-3/4"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
25
|
390414J
|
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|
|
1-3/4"
|
1/4"-28
|
Fine
|
KM-USA High Head
|
100
|
390414
|
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|
Standard Grade 8 (USS) Hex Head Cap Screws - Zinc Plated
Built to handle demanding tasks, these Grade 8 (USS) hex head cap screws feature a high‑tensile steel design for extra safety. The zinc yellow plating provides added corrosion resistance, while a 150,000 PSI minimum tensile strength ensures durability under stress. Use with matching nuts and washers in agricultural machinery or heavy equipment assembly for robust, lasting performance.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580404
|
Log in to view price
|
|
Package Weight: 1.2 lbs
|
||||||
|
5/8"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580405
|
Log in to view price
|
|
Package Weight: 1.3 lbs
|
||||||
|
3/4"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580406
|
Log in to view price
|
|
Package Weight: 1.5 lbs
|
||||||
|
7/8"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580407
|
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|
|
Package Weight: 1.6 lbs
|
||||||
|
1"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580408
|
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|
|
Package Weight: 1.7 lbs
|
||||||
|
1-1/4"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580410
|
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|
|
Package Weight: 2.1 lbs
|
||||||
|
1-1/2"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580412
|
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|
|
1-3/4"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580414
|
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|
|
2"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
580416
|
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|
|
Package Weight: 3.1 lbs
|
||||||
|
2-1/4"
|
1/4"-20
|
Coarse
|
Standard
|
50
|
580418
|
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|
|
Package Weight: 1.8 lbs
|
||||||
|
2-1/2"
|
1/4"-20
|
Coarse
|
Standard
|
50
|
580420
|
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|
|
Package Weight: 1.9 lbs
|
||||||
|
2-3/4"
|
1/4"-20
|
Coarse
|
Standard
|
50
|
580422
|
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|
|
Package Weight: 2.1 lbs
|
||||||
Standard Grade 8 (SAE) Hex Head Cap Screws - Zinc Plated
Engineered for critical fastening, these Grade 8 (SAE) hex head cap screws meet ASME B18.2 standards. With a zinc yellow plating, they deliver reliable corrosion resistance and 150,000 PSI tensile strength. Ideal for automotive engines or industrial setups, they install best on clean surfaces with the correct torque. Pair with recommended washers and nuts to ensure safe, vibration‑resistant connections.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590404
|
Log in to view price
|
|
Package Weight: 1.2 lbs
|
||||||
|
3/4"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590406
|
Log in to view price
|
|
Package Weight: 1.5 lbs
|
||||||
|
1"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590408
|
Log in to view price
|
|
1-1/4"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590410
|
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|
|
1-1/2"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590412
|
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|
|
1-3/4"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590414
|
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|
|
2"
|
1/4"-28
|
Fine
|
Standard
|
100
|
590416
|
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|
|
Package Weight: 3.4 lbs
|
||||||
|
2-1/4"
|
1/4"-28
|
Fine
|
Standard
|
50
|
590418
|
Log in to view price
|
|
Package Weight: 1.8 lbs
|
||||||
|
2-1/2"
|
1/4"-28
|
Fine
|
Standard
|
50
|
590420
|
Log in to view price
|
|
Package Weight: 2.1 lbs
|
||||||
|
2-3/4"
|
1/4"-28
|
Fine
|
Standard
|
50
|
590422
|
Log in to view price
|
|
Package Weight: 2.1 lbs
|
||||||
|
3"
|
1/4"-28
|
Fine
|
Standard
|
50
|
590424
|
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|
|
Package Weight: 2.4 lbs
|
||||||
|
3-1/4"
|
1/4"-28
|
Fine
|
Standard
|
25
|
590426
|
Log in to view price
|
|
Package Weight: 1.3 lbs
|
||||||
Standard Grade 8 (USS) Hex Head Cap Screws - Plain Finish
Designed for high‑stress needs, these Grade 8 (USS) hex head cap screws come in a plain finish suited for applications where extra corrosion protection isn’t required. Made from medium carbon alloy steel, they meet ASME B18.2 standards for reliable performance. With a 150,000 PSI tensile strength, they’re ideal in structural and machinery use. Combine with Grade 8 washers and nuts, following proper torque guidelines.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810404
|
Log in to view price
|
|
3/4"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810406
|
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|
|
1"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810408
|
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|
|
1-1/4"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810410
|
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|
|
1-1/2"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810412
|
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|
|
1-3/4"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810414
|
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|
|
2"
|
1/4"-20
|
Coarse
|
Standard
|
100
|
3810416
|
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|
|
2-1/4"
|
1/4"-20
|
Coarse
|
Standard
|
50
|
3810418
|
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|
|
2-1/2"
|
1/4"-20
|
Coarse
|
Standard
|
50
|
3810420
|
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|
|
3"
|
1/4"-20
|
Coarse
|
Standard
|
50
|
3810424
|
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|
Diameter: 5/16"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
5/16"-18
|
Coarse
|
Standard
|
100
|
3810504
|
Log in to view price
|
|
3/4"
|
5/16"-18
|
Coarse
|
Standard
|
100
|
3810506
|
Log in to view price
|
Standard Grade 8 (SAE) Hex Head Cap Screws - Plain Finish
Ideal for heavy loads where plating isn’t essential, these Grade 8 (SAE) plain finish hex head cap screws deliver reliable strength in MRO environments. The medium carbon alloy steel construction meets ASME B18.2 specs for proven performance. For best results, pair with Grade 8 washers and nuts, applying recommended torque in automotive or industrial machinery.
Diameter: 3/8"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
3/4"
|
5/16"-24
|
Fine
|
Standard
|
100
|
3910508
|
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|
|
1"
|
3/8"-24
|
Fine
|
Standard
|
100
|
3910608
|
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|
|
1-1/2"
|
3/8"-24
|
Fine
|
Standard
|
100
|
3910612
|
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|
|
1-3/4"
|
3/8"-24
|
Fine
|
Standard
|
100
|
3910614
|
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|
|
2"
|
3/8"-24
|
Fine
|
Standard
|
100
|
3910616
|
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|
|
2-1/2"
|
3/8"-24
|
Fine
|
Standard
|
50
|
3910620
|
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|
|
3"
|
3/8"-24
|
Fine
|
Standard
|
50
|
3910624
|
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|
|
3-1/2"
|
3/8"-24
|
Fine
|
Standard
|
25
|
3910628
|
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|
|
4"
|
3/8"-24
|
Fine
|
Standard
|
25
|
3910632
|
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|
Diameter: 7/16"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1"
|
7/16"-20
|
Fine
|
Standard
|
50
|
3910708
|
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|
|
1-1/2"
|
7/16"-20
|
Fine
|
Standard
|
50
|
3910712
|
Log in to view price
|
|
2"
|
7/16"-20
|
Fine
|
Standard
|
50
|
3910716
|
Log in to view price
|
Armor Coat™ Grade 8 (USS) Hex Head Cap Screws
Featuring an Armor Coat finish for exceptional corrosion protection, these Grade 8 hex head cap screws withstand harsh environments with ease. They surpass 1,000‑hour salt spray tests and offer up to 150,000 PSI tensile strength—outperforming stainless steel in demanding conditions. Install where rust is a concern, such as marine, off‑road, or chemical processing settings. Pair with matching washers and nuts for best results.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1/2"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
100
|
3820404
|
Log in to view price
|
|
3/4"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
100
|
3820406
|
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|
|
1"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
100
|
3820408
|
Log in to view price
|
|
1-1/4"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
100
|
3820410
|
Log in to view price
|
|
1-1/2"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
100
|
3820412
|
Log in to view price
|
|
1-3/4"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
50
|
3820414
|
Log in to view price
|
|
2"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
50
|
3820416
|
Log in to view price
|
|
2-1/4"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
50
|
3820418
|
Log in to view price
|
|
2-1/2"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
50
|
3820420
|
Log in to view price
|
|
2-3/4"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
50
|
3820422
|
Log in to view price
|
|
3"
|
1/4"-20
|
Coarse
|
Armor Coat™
|
50
|
3820424
|
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|
Diameter: 5/16"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
3/4"
|
5/16"-18
|
Coarse
|
Armor Coat™
|
100
|
3820506
|
Log in to view price
|
Standard Grade 8 (USS) Fully Threaded Hex Head Tap Bolts - Zinc Plated
For full thread engagement, these Grade 8 fully threaded tap bolts offer maximum grip in tight or deep tapped holes. A zinc yellow trivalent plating shields against corrosion, while 150,000 PSI tensile strength ensures dependable hold in heavy equipment or engine assemblies. Align bolt threads carefully and secure with recommended washers and nuts. Perfect for tasks demanding extra reach and consistent threading.
Diameter: 1/4"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1-1/4"
|
1/4"-20
|
Coarse
|
Tap Bolt
|
50
|
384410
|
Log in to view price
|
|
1-1/2"
|
1/4"-20
|
Coarse
|
Tap Bolt
|
50
|
384412
|
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|
|
2"
|
1/4"-20
|
Coarse
|
Tap Bolt
|
50
|
384416
|
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|
|
2-1/2"
|
1/4"-20
|
Coarse
|
Tap Bolt
|
25
|
384420
|
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|
|
3"
|
1/4"-20
|
Coarse
|
Tap Bolt
|
25
|
384424
|
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|
Diameter: 5/16"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1-1/2"
|
5/16"-18
|
Coarse
|
Tap Bolt
|
50
|
384512
|
Log in to view price
|
|
1-3/4"
|
5/16"-18
|
Coarse
|
Tap Bolt
|
50
|
384514
|
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|
|
2"
|
5/16"-18
|
Coarse
|
Tap Bolt
|
50
|
384516
|
Log in to view price
|
|
2-1/2"
|
5/16"-18
|
Coarse
|
Tap Bolt
|
25
|
384520
|
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|
|
3"
|
5/16"-18
|
Coarse
|
Tap Bolt
|
25
|
384524
|
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|
Diameter: 3/8"
| Length | Thread Size | Thread Type | Series | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
|
1-1/2"
|
3/8"-16
|
Coarse
|
Tap Bolt
|
50
|
384612
|
Log in to view price
|
|
1-3/4"
|
3/8"-16
|
Coarse
|
Tap Bolt
|
50
|
384614
|
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|
KM-USA Grade 8 (USS) High Head Hex Head Cap Screw Assortments
Storage Type: 120-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Large Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
3,510
|
1
|
403803
|
Log in to view price
|
Storage Type: 24-Compartment Drawer
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
750
|
1
|
40388
|
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|
Storage Type: 40-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
1,735
|
1
|
40380
|
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|
|
Package Weight: 102.4 lbs
|
|||||||
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
1,200
|
1
|
403801
|
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|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (3/4" - 1")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
230
|
1
|
403811
|
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|
|
Package Weight: 117.3 lbs
|
|||||||
Storage Type: 80-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Grade 8 Hex Head (USS & SAE) Cap Screw Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE, USS
|
3,000
|
1
|
40383
|
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|
|
KM-USA High Head Hex Head Grade 8 (USS) Cap Screw Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
3,775
|
1
|
40385
|
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|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
1,910
|
1
|
40386
|
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|
|
Package Weight: 190.3 lbs
|
|||||||
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
2,720
|
1
|
40381
|
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|
|
Package Weight: 180.8 lbs
|
|||||||
Storage Type: Refill Kit
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Refill Kit for KM-USA High Head Grade 8 Hex Head (USS & SAE) Cap Screw Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE, USS
|
3,000
|
1
|
40383RE
|
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|
|
Refill Kit for KM-USA High Head Grade 8 Hex Head (USS) Cap Screw Large Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
3,775
|
1
|
40385RE
|
Log in to view price
|
|
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Large Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
2,720
|
1
|
40381RE
|
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|
KM-USA Grade 8 (SAE) Hex Head Cap Screw Assortments
Storage Type: 24-Compartment Drawer
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
620
|
1
|
40398
|
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|
Storage Type: 40-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
1,735
|
1
|
40390
|
Log in to view price
|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (3/4" - 1")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
230
|
1
|
403911
|
Log in to view price
|
|
Package Weight: 119.2 lbs
|
|||||||
Storage Type: 80-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
KM-USA High Head Hex Head Grade 8 (SAE) Cap Screw Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
3,375
|
1
|
40395
|
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|
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
1,910
|
1
|
40396
|
Log in to view price
|
|
Package Weight: 185.3 lbs
|
|||||||
|
KM-USA High Head Hex Head Grade 8 Cap Screw Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
2,720
|
1
|
40391
|
Log in to view price
|
|
Package Weight: 174.4 lbs
|
|||||||
Storage Type: Refill Kit
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Refill Kit for KM-USA High Head Grade 8 Hex Head Cap Screw Small Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
1,910
|
1
|
40396RE
|
Log in to view price
|
|
Refill Kit for KM-USA High Head Hex Grade 8 Head Cap Screw Small Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
2,720
|
1
|
40391RE
|
Log in to view price
|
|
Refill Kit for KM-USA High Head Hex Head Grade 8 Cap Screw Large Assortment (3/4" - 1")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
230
|
1
|
403911RE
|
Log in to view price
|
Standard Grade 8 (USS) Hex Head Cap Screw Assortments
Storage Type: 24-Compartment Drawer
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Fully Threaded Grade 8 Hex Head Cap Screw (Tap Bolt) Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
180
|
1
|
403881
|
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|
Storage Type: 40-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 (USS) Hex Head Cap Screw Small Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
1,735
|
1
|
4038058
|
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|
Storage Type: 80-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 Hex Head Cap Screw (USS) Assortment (1/4" - 3/4")
|
Alloy Steel
|
Plain Finish
|
USS
|
1,910
|
1
|
4038658
|
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|
|
Package Weight: 183.1 lbs
|
|||||||
Storage Type: Refill Kit
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Refill Kit for Grade 8 (USS) Hex Head Cap Screw Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
USS
|
1,735
|
1
|
4038058RE
|
Log in to view price
|
Standard Grade 8 (SAE) Hex Head Cap Screw Assortments
Storage Type: 40-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 (SAE) Hex Head Cap Screw Small Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
1,735
|
1
|
4039059
|
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|
Storage Type: 80-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 Hex Head Cap Screw (SAE) Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Zinc, Yellow Trivalent
|
SAE
|
1,910
|
1
|
4039659
|
Log in to view price
|
|
Package Weight: 181.8 lbs
|
|||||||
Armor Coat™ Grade 8 Hex Head Cap Screw Assortments
Featuring an Armor Coat finish for exceptional corrosion protection, these Grade 8 hex head cap screws withstand harsh environments with ease. They surpass 1,000‑hour salt spray tests and offer up to 150,000 PSI tensile strength—outperforming stainless steel in demanding conditions. Install where rust is a concern, such as marine, off‑road, or chemical processing settings. Pair with matching washers and nuts for best results.
Storage Type: 40-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 Hex Head Cap Screw Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Armor Coat
|
USS
|
1,735
|
1
|
40387
|
Log in to view price
|
|
Package Weight: 93.2 lbs
|
|||||||
Storage Type: 80-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 Hex Head Cap Screw Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Armor Coat
|
USS
|
1,910
|
1
|
403875
|
Log in to view price
|
|
Package Weight: 177.9 lbs
|
|||||||
|
Grade 8 Hex Head Cap Screw Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Armor Coat
|
USS
|
2,720
|
1
|
403872
|
Log in to view price
|
|
Package Weight: 166.7 lbs
|
|||||||
Storage Type: Refill Kit
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Refill Kit for Grade 8 Armor Coat™ (USS) Hex Head Cap Screw Large Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Armor Coat
|
USS
|
2,720
|
1
|
403872RE
|
Log in to view price
|
|
Refill Kit for Grade 8 Armor Coat™ (USS) Hex Head Cap Screw Small Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Armor Coat
|
USS
|
1,910
|
1
|
403875RE
|
Log in to view price
|
|
Refill Kit for Grade 8 Armor Coat™ Hex Head Cap Screw Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Armor Coat
|
USS
|
1,735
|
1
|
40387RE
|
Log in to view price
|
Standard Plain Finish Grade 8 (USS) Hex Head Cap Screw Assortments
Storage Type: 40-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 Hex Head Cap Screw Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Plain Finish
|
USS
|
1,735
|
1
|
403864
|
Log in to view price
|
|
Package Weight: 96.7 lbs
|
|||||||
Storage Type: 80-Hole Bin
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Grade 8 Hex Head Cap Screw Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Plain Finish
|
USS
|
1,910
|
1
|
403868
|
Log in to view price
|
|
Package Weight: 175.3 lbs
|
|||||||
Storage Type: Refill Kit
| Name | Material | Finish | Measurement Type | Number of Pieces | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|---|
|
Refill Kit for Grade 8 (USS) Hex Head Cap Screw Small Assortment (1/4" - 1/2")
|
Medium Carbon Alloy Steel
|
Plain Finish
|
USS
|
1,735
|
1
|
403864RE
|
Log in to view price
|
|
Refill Kit for Grade 8 Hex Head Cap Screw Large Assortment (1/4" - 5/8")
|
Medium Carbon Alloy Steel
|
Plain Finish
|
USS
|
2,720
|
1
|
403866RE
|
Log in to view price
|
|
Refill Kit for Grade 8 Hex Head Cap Screw Small Assortment (1/4" - 3/4")
|
Medium Carbon Alloy Steel
|
Plain Finish
|
USS
|
1,910
|
1
|
403868RE
|
Log in to view price
|
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Steeped in Kimball Midwest's commitment to American-made quality, our Grade 8 Hex Head cap screws are known for their superior strength and durability. They're ideal for heavy-duty applications where superior tensile strength is necessary.
Superior Strength and Durability
Our Grade 8 cap screws are crafted from high-strength carbon alloy steel and are designed for demanding applications and to deliver an extra margin of job safety. Their impressive strength makes them suitable for various industrial, machinery and automotive applications.
Cap Screws For Versatile Applications
Our hex head cap screws come in various sizes and lengths, making them versatile for different uses. Whether you need fasteners for machinery, construction or maintenance tasks, our Grade 8 screws offer the reliability you need to get the job done right. Choose from a variety of screw series including Armor Coat™, KM-USA High Head, Standard and Tap Bolt.
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