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.

Product View:
Items per page: 30 60 90
Sort:
Filter
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
Filter
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
  • Show More
  • Show Less
Sort By
  Recommended
  Name A-Z
  Name Z-A
1498 results
KM-USA High Head Grade 8 (USS) Hex Head Cap Screws - Zinc Plated
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
1/4"-20
Coarse
KM-USA High Head
25
Log in to view price
1/2"
1/4"-20
Coarse
KM-USA High Head
100
Log in to view price
3/4"
1/4"-20
Coarse
KM-USA High Head
25
Log in to view price
3/4"
1/4"-20
Coarse
KM-USA High Head
100
Log in to view price
1"
1/4"-20
Coarse
KM-USA High Head
25
Log in to view price
1"
1/4"-20
Coarse
KM-USA High Head
100
Log in to view price
1-1/4"
1/4"-20
Coarse
KM-USA High Head
25
Log in to view price
1-1/4"
1/4"-20
Coarse
KM-USA High Head
100
Log in to view price
1-1/2"
1/4"-20
Coarse
KM-USA High Head
25
Log in to view price
1-1/2"
1/4"-20
Coarse
KM-USA High Head
100
Log in to view price
1-3/4"
1/4"-20
Coarse
KM-USA High Head
25
Log in to view price
1-3/4"
1/4"-20
Coarse
KM-USA High Head
100
Log in to view price
KM-USA High Head Grade 8 (SAE) Hex Head Cap Screws - Zinc Plated
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
1/4"-28
Fine
KM-USA High Head
25
Log in to view price
1/2"
1/4"-28
Fine
KM-USA High Head
100
Log in to view price
3/4"
1/4"-28
Fine
KM-USA High Head
25
Log in to view price
3/4"
1/4"-28
Fine
KM-USA High Head
100
Log in to view price
1"
1/4"-28
Fine
KM-USA High Head
25
Log in to view price
1"
1/4"-28
Fine
KM-USA High Head
100
Log in to view price
1-1/4"
1/4"-28
Fine
KM-USA High Head
25
Log in to view price
1-1/4"
1/4"-28
Fine
KM-USA High Head
100
Log in to view price
1-1/2"
1/4"-28
Fine
KM-USA High Head
25
Log in to view price
1-1/2"
1/4"-28
Fine
KM-USA High Head
100
Log in to view price
1-3/4"
1/4"-28
Fine
KM-USA High Head
25
Log in to view price
1-3/4"
1/4"-28
Fine
KM-USA High Head
100
Log in to view price
Standard Grade 8 (USS) Hex Head Cap Screws - Zinc Plated
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
1/4"-20
Coarse
Standard
100
Log in to view price
5/8"
1/4"-20
Coarse
Standard
100
Log in to view price
3/4"
1/4"-20
Coarse
Standard
100
Log in to view price
7/8"
1/4"-20
Coarse
Standard
100
Log in to view price
1"
1/4"-20
Coarse
Standard
100
Log in to view price
1-1/4"
1/4"-20
Coarse
Standard
100
Log in to view price
1-1/2"
1/4"-20
Coarse
Standard
100
Log in to view price
1-3/4"
1/4"-20
Coarse
Standard
100
Log in to view price
2"
1/4"-20
Coarse
Standard
100
Log in to view price
2-1/4"
1/4"-20
Coarse
Standard
50
Log in to view price
2-1/2"
1/4"-20
Coarse
Standard
50
Log in to view price
2-3/4"
1/4"-20
Coarse
Standard
50
Log in to view price
Standard Grade 8 (SAE) Hex Head Cap Screws - Zinc Plated
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
1/4"-28
Fine
Standard
100
Log in to view price
3/4"
1/4"-28
Fine
Standard
100
Log in to view price
1"
1/4"-28
Fine
Standard
100
Log in to view price
1-1/4"
1/4"-28
Fine
Standard
100
Log in to view price
1-1/2"
1/4"-28
Fine
Standard
100
Log in to view price
1-3/4"
1/4"-28
Fine
Standard
100
Log in to view price
2"
1/4"-28
Fine
Standard
100
Log in to view price
2-1/4"
1/4"-28
Fine
Standard
50
Log in to view price
2-1/2"
1/4"-28
Fine
Standard
50
Log in to view price
2-3/4"
1/4"-28
Fine
Standard
50
Log in to view price
3"
1/4"-28
Fine
Standard
50
Log in to view price
3-1/4"
1/4"-28
Fine
Standard
25
Log in to view price
Standard Grade 8 (USS) Hex Head Cap Screws - Plain Finish
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
1/4"-20
Coarse
Standard
100
Log in to view price
3/4"
1/4"-20
Coarse
Standard
100
Log in to view price
1"
1/4"-20
Coarse
Standard
100
Log in to view price
1-1/4"
1/4"-20
Coarse
Standard
100
Log in to view price
1-1/2"
1/4"-20
Coarse
Standard
100
Log in to view price
1-3/4"
1/4"-20
Coarse
Standard
100
Log in to view price
2"
1/4"-20
Coarse
Standard
100
Log in to view price
2-1/4"
1/4"-20
Coarse
Standard
50
Log in to view price
2-1/2"
1/4"-20
Coarse
Standard
50
Log in to view price
3"
1/4"-20
Coarse
Standard
50
Log in to view price
Diameter: 5/16"

Length Thread Size Thread Type Series Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
5/16"-18
Coarse
Standard
100
Log in to view price
3/4"
5/16"-18
Coarse
Standard
100
Log in to view price
Standard Grade 8 (SAE) Hex Head Cap Screws - Plain Finish
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
3/4"
5/16"-24
Fine
Standard
100
Log in to view price
1"
3/8"-24
Fine
Standard
100
Log in to view price
1-1/2"
3/8"-24
Fine
Standard
100
Log in to view price
1-3/4"
3/8"-24
Fine
Standard
100
Log in to view price
2"
3/8"-24
Fine
Standard
100
Log in to view price
2-1/2"
3/8"-24
Fine
Standard
50
Log in to view price
3"
3/8"-24
Fine
Standard
50
Log in to view price
3-1/2"
3/8"-24
Fine
Standard
25
Log in to view price
4"
3/8"-24
Fine
Standard
25
Log in to view price
Diameter: 7/16"

Length Thread Size Thread Type Series Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1"
7/16"-20
Fine
Standard
50
Log in to view price
1-1/2"
7/16"-20
Fine
Standard
50
Log in to view price
2"
7/16"-20
Fine
Standard
50
Log in to view price
Armor Coat™ Grade 8 (USS) Hex Head Cap Screws
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1/2"
1/4"-20
Coarse
Armor Coat™
100
Log in to view price
3/4"
1/4"-20
Coarse
Armor Coat™
100
Log in to view price
1"
1/4"-20
Coarse
Armor Coat™
100
Log in to view price
1-1/4"
1/4"-20
Coarse
Armor Coat™
100
Log in to view price
1-1/2"
1/4"-20
Coarse
Armor Coat™
100
Log in to view price
1-3/4"
1/4"-20
Coarse
Armor Coat™
50
Log in to view price
2"
1/4"-20
Coarse
Armor Coat™
50
Log in to view price
2-1/4"
1/4"-20
Coarse
Armor Coat™
50
Log in to view price
2-1/2"
1/4"-20
Coarse
Armor Coat™
50
Log in to view price
2-3/4"
1/4"-20
Coarse
Armor Coat™
50
Log in to view price
3"
1/4"-20
Coarse
Armor Coat™
50
Log in to view price
Diameter: 5/16"

Length Thread Size Thread Type Series Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
3/4"
5/16"-18
Coarse
Armor Coat™
100
Log in to view price
Standard Grade 8 (USS) Fully Threaded Hex Head Tap Bolts - Zinc Plated
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1-1/4"
1/4"-20
Coarse
Tap Bolt
50
Log in to view price
1-1/2"
1/4"-20
Coarse
Tap Bolt
50
Log in to view price
2"
1/4"-20
Coarse
Tap Bolt
50
Log in to view price
2-1/2"
1/4"-20
Coarse
Tap Bolt
25
Log in to view price
3"
1/4"-20
Coarse
Tap Bolt
25
Log in to view price
Diameter: 5/16"

Length Thread Size Thread Type Series Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1-1/2"
5/16"-18
Coarse
Tap Bolt
50
Log in to view price
1-3/4"
5/16"-18
Coarse
Tap Bolt
50
Log in to view price
2"
5/16"-18
Coarse
Tap Bolt
50
Log in to view price
2-1/2"
5/16"-18
Coarse
Tap Bolt
25
Log in to view price
3"
5/16"-18
Coarse
Tap Bolt
25
Log in to view price
Diameter: 3/8"

Length Thread Size Thread Type Series Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
1-1/2"
3/8"-16
Coarse
Tap Bolt
50
Log in to view price
1-3/4"
3/8"-16
Coarse
Tap Bolt
50
Log in to view price
KM-USA Grade 8 (USS) High Head Hex Head Cap Screw Assortments
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
Storage Type: 24-Compartment Drawer

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
Storage Type: 40-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
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
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
USS
230
1
Log in to view price
Storage Type: 80-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
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
Log in to view price
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
Log in to view price
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
Log in to view price
Storage Type: Refill Kit

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
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
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
Log in to view price
KM-USA Grade 8 (SAE) Hex Head Cap Screw Assortments
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
Storage Type: 40-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
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
Log in to view price
Storage Type: 80-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
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
Log in to view price
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
Log in to view price
Storage Type: Refill Kit

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
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
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
Log in to view price
Standard Grade 8 (USS) Hex Head Cap Screw Assortments
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
Storage Type: 40-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 (USS) Hex Head Cap Screw Small Assortment (1/4" - 1/2")
Medium Carbon Alloy Steel
Zinc, Yellow Trivalent
USS
1,735
1
Log in to view price
Storage Type: 80-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 Hex Head Cap Screw (USS) Assortment (1/4" - 3/4")
Alloy Steel
Plain Finish
USS
1,910
1
Log in to view price
Storage Type: Refill Kit

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
Log in to view price
Standard Grade 8 (SAE) Hex Head Cap Screw Assortments
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 (SAE) Hex Head Cap Screw Small Assortment (1/4" - 1/2")
Medium Carbon Alloy Steel
Zinc, Yellow Trivalent
SAE
1,735
1
Log in to view price
Storage Type: 80-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 Hex Head Cap Screw (SAE) Assortment (1/4" - 3/4")
Medium Carbon Alloy Steel
Zinc, Yellow Trivalent
SAE
1,910
1
Log in to view price
Armor Coat™ Grade 8 Hex Head Cap Screw Assortments
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 Hex Head Cap Screw Assortment (1/4" - 1/2")
Medium Carbon Alloy Steel
Armor Coat
USS
1,735
1
Log in to view price
Storage Type: 80-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 Hex Head Cap Screw Assortment (1/4" - 3/4")
Medium Carbon Alloy Steel
Armor Coat
USS
1,910
1
Log in to view price
Grade 8 Hex Head Cap Screw Assortment (1/4" - 5/8")
Medium Carbon Alloy Steel
Armor Coat
USS
2,720
1
Log in to view price
Storage Type: Refill Kit

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
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
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
Log in to view price
Standard Plain Finish Grade 8 (USS) Hex Head Cap Screw Assortments
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
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 Hex Head Cap Screw Assortment (1/4" - 1/2")
Medium Carbon Alloy Steel
Plain Finish
USS
1,735
1
Log in to view price
Storage Type: 80-Hole Bin

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Grade 8 Hex Head Cap Screw Assortment (1/4" - 3/4")
Medium Carbon Alloy Steel
Plain Finish
USS
1,910
1
Log in to view price
Storage Type: Refill Kit

Name Material Finish Measurement Type Number of Pieces Package Qty Item #
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
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
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
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
Log in to view price

Top
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 50
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 50
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 50
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 50
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 25
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
Price
Want to view pricing for this product?
Log In or Create Login

Not a Kimball Midwest Customer?
Register
Pkg Qty: 100
130 of 1,498 Results

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.

Stay Connected

Facebook LinkedIn Twitter Instagram YouTube Blog

Click '' to proceed with checkout or 'View Shopping Cart' to update.
  
For your account's security, we log you out after 4 hours of inactivity. To continue shopping, simply click the button below to log in again.