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Button Head Socket Head Cap Screws

Tight clearance but you still need muscle? Button head socket cap screws give you a low-profile head with solid hex key drive for guards, panels and fixtures. Choose alloy steel (ANSI B18.3, 145,000 psi) for high clamp loads, 18-8 stainless for corrosion or metric Class 10.9 for OEM fits. Coarse for general work, fine for better hold in thin material.

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313 results
Premium USA Button Socket Head Cap Screws - Coarse Thread (USS)
Premium USA Button Socket Head Cap Screws - Coarse Thread (USS)
Premium USA button socket head cap screws made from heat‑treated alloy steel with black oxide finish. Low button head and hex drive provide streamlined assembly and strong engagement; fully formed coarse threads deliver reliable strength. Made in the U.S.A.
Diameter: #4

Length Thread Size Thread Type Package Qty Item #
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1/4"
#4-40
Coarse
100
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3/8"
#4-40
Coarse
100
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1/2"
#4-40
Coarse
100
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Diameter: #6

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Price
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1/4"
#6-32
Coarse
100
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3/8"
#6-32
Coarse
100
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1/2"
#6-32
Coarse
100
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5/8"
#6-32
Coarse
100
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Diameter: #8

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Price
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1/4"
#8-32
Coarse
100
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3/8"
#8-32
Coarse
100
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1/2"
#8-32
Coarse
100
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5/8"
#8-32
Coarse
100
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3/4"
#8-32
Coarse
100
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Premium USA Button Socket Head Cap Screws - Fine Thread (SAE)
Premium USA Button Socket Head Cap Screws - Fine Thread (SAE)
Premium button socket head cap screws made from heat‑treated alloy steel with black oxide finish and fine #10-32 threads. Hex drive and low button head profile. Fully formed threads and high tensile strength provide improved joint clamping and resistance to shear for general fastening.
Diameter: #10

Length Thread Size Thread Type Package Qty Item #
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1/4"
#10-32
Fine
100
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3/8"
#10-32
Fine
100
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1/2"
#10-32
Fine
100
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5/8"
#10-32
Fine
100
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3/4"
#10-32
Fine
100
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7/8"
#10-32
Fine
100
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1"
#10-32
Fine
100
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Black Oil Dipped Button Socket Head Cap Screws - Coarse Thread (USS)
Black Oil Dipped Button Socket Head Cap Screws - Coarse Thread (USS)
Button socket head cap screws in alloy steel with a black oil-dipped finish and coarse USS threads. Button head with hex drive recess; tensile strength of 145,000 psi and made to ANSI B18.3. Durable finish helps resist corrosion and provides a low-glare appearance for general fastening.
Diameter: #4

Length Thread Size Thread Type Package Qty Item #
Price
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1/4"
#4-40
Coarse
50
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3/8"
#4-40
Coarse
50
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1/2"
#4-40
Coarse
50
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5/8"
#4-40
Coarse
50
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3/4"
#4-40
Coarse
50
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Diameter: #6

Length Thread Size Thread Type Package Qty Item #
Price
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1/4"
#6-32
Coarse
50
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3/8"
#6-32
Coarse
50
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1/2"
#6-32
Coarse
50
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5/8"
#6-32
Coarse
50
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3/4"
#6-32
Coarse
50
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1"
#6-32
Coarse
50
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Diameter: #8

Length Thread Size Thread Type Package Qty Item #
Price
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1/4"
#8-32
Coarse
50
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Black Oil Dipped Button Socket Head Cap Screws - Fine Thread (SAE)
Black Oil Dipped Button Socket Head Cap Screws - Fine Thread (SAE)
Fine‑thread SAE button socket head cap screws made from alloy steel with a black oil‑dipped finish. Hex drive button heads conform to ANSI B18.3 and offer 145,000 psi tensile strength, providing durable, precision fastening for machinery and assemblies.
Diameter: #10

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1/4"
#10-32
Fine
50
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3/8"
#10-32
Fine
50
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1/2"
#10-32
Fine
50
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5/8"
#10-32
Fine
50
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3/4"
#10-32
Fine
50
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7/8"
#10-32
Fine
50
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1"
#10-32
Fine
50
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1-1/4"
#10-32
Fine
25
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1-1/2"
#10-32
Fine
25
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1-3/4"
#10-32
Fine
25
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2"
#10-32
Fine
25
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Diameter: 1/4"

Length Thread Size Thread Type Package Qty Item #
Price
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3/8"
1/4"-28
Fine
50
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Zinc Plated Button Socket Head Cap Screws - Coarse Thread (USS)
Zinc Plated Button Socket Head Cap Screws - Coarse Thread (USS)
Button socket head cap screws in alloy steel with a zinc-plated finish and hex drive recess. Coarse USS threads manufactured to ANSI B18.3 with 145,000 psi tensile strength. Button head form provides a low profile and zinc plating helps resist corrosion for general fastening.
Diameter: #4

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Price
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1/4"
#4-40
Coarse
25
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1/2"
#4-40
Coarse
25
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Diameter: #6

Length Thread Size Thread Type Package Qty Item #
Price
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1/4"
#6-32
Coarse
25
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3/8"
#6-32
Coarse
25
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1/2"
#6-32
Coarse
25
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5/8"
#6-32
Coarse
25
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Diameter: #8

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Price
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1/2"
#8-32
Coarse
25
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5/8"
#8-32
Coarse
25
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3/4"
#8-32
Coarse
25
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Diameter: #10

Length Thread Size Thread Type Package Qty Item #
Price
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3/8"
#10-24
Coarse
25
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1/2"
#10-24
Coarse
25
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5/8"
#10-24
Coarse
25
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Zinc Plated Button Socket Head Cap Screws - Fine Thread (SAE)
Zinc Plated Button Socket Head Cap Screws - Fine Thread (SAE)
Zinc-plated alloy steel button socket head cap screws with #10-32 fine threads and hex drive recess. Conforms to ANSI B18.3 and offers 145,000 psi tensile strength. Zinc finish resists corrosion, while button head and hex drive provide compact fastening for machine and enclosure assemblies.
Diameter: #10

Length Thread Size Thread Type Package Qty Item #
Price
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3/8"
#10-32
Fine
25
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1/2"
#10-32
Fine
25
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5/8"
#10-32
Fine
25
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3/4"
#10-32
Fine
25
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18-8 Stainless Steel Button Socket Head Cap Screws - Coarse Thread (USS)
18-8 Stainless Steel Button Socket Head Cap Screws - Coarse Thread (USS)
A range of 18-8 stainless steel button head socket cap screws with coarse USS threads and hex drive recess. Corrosion-resistant material provides general durability, while button head offers lower profile for assemblies. Available in multiple thread sizes and lengths.
Diameter: #8

Length Thread Size Thread Type Package Qty Item #
Price
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1/4"
#8-32
Coarse
50
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18-8 Stainless Steel Button Socket Head Cap Screws - Fine Thread (SAE)
18-8 Stainless Steel Button Socket Head Cap Screws - Fine Thread (SAE)
18-8 stainless steel button socket head cap screws with fine #10-32 threads and hex socket drive. Button head profile provides a low, smooth bearing surface and the fine thread improves clamp-up in thin materials. Suitable for precision assemblies and general fastening.
Diameter: #10

Length Thread Size Thread Type Package Qty Item #
Price
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1/4"
#10-32
Fine
50
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3/8"
#10-32
Fine
50
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1/2"
#10-32
Fine
50
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5/8"
#10-32
Fine
50
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3/4"
#10-32
Fine
50
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1"
#10-32
Fine
50
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1-1/2"
#10-32
Fine
25
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Metric Button Socket Head Cap Screws
Metric Button Socket Head Cap Screws
Metric button socket head cap screws made from alloy steel with class 10.9 strength and a black oil-dipped finish. Button head with hex drive and coarse metric threads; high tensile strength provides durable fastening and the finish helps resist corrosion. Suitable for general assembly.
Diameter: M3

Length Thread Size Thread Type Package Qty Item #
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6 mm
M3 x 0.5
Coarse
50
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8 mm
M3 x 0.5
Coarse
50
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10 mm
M3 x 0.5
Coarse
50
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12 mm
M3 x 0.5
Coarse
50
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Diameter: M4

Length Thread Size Thread Type Package Qty Item #
Price
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6 mm
M4 x 0.7
Coarse
50
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8 mm
M4 x 0.7
Coarse
50
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10 mm
M4 x 0.7
Coarse
50
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12 mm
M4 x 0.7
Coarse
50
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16 mm
M4 x 0.7
Coarse
25
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20 mm
M4 x 0.7
Coarse
25
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25 mm
M4 x 0.7
Coarse
25
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30 mm
M4 x 0.7
Coarse
25
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Stainless Steel Button Socket Head Cap Screws
Stainless Steel Button Socket Head Cap Screws
Stainless steel button socket head cap screws in 18-8 material with hex drive recess and coarse metric threads. Button head profile reduces snagging and the hex socket provides positive drive control. Suited for general-purpose assemblies requiring corrosion resistance.
Diameter: M3

Diameter: M4

Length Thread Size Thread Type Package Qty Item #
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8 mm
M4 x 0.7
Coarse
25
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10 mm
M4 x 0.7
Coarse
25
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12 mm
M4 x 0.7
Coarse
25
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16 mm
M4 x 0.7
Coarse
25
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20 mm
M4 x 0.7
Coarse
25
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Diameter: M5

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8 mm
M5 x 0.8
Coarse
25
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