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SAE & USS Standard Socket Head Cap Screws

Need high clamp in tight spots? These SAE and USS socket head cap screws are ANSI B18.3, ASA 1960 series and ASTM A574 options in alloy steel up to 180,000 psi plus 18-8 and 316 stainless for washdown, marine and chemical areas. Go coarse for general repairs, fine for better hold in thin or hard materials. We keep them ready.

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975 results
Premium USA Socket Head Cap Screws - Coarse Thread (USS)
Premium USA Socket Head Cap Screws - Coarse Thread (USS)
Premium USA socket head cap screws made from ASTM A574 alloy steel with black oxide finish. Coarse USS threads, hex drive recess and ANSI/ASME B18.3 dimensions; hardness ranging from RC 39-45 and high tensile strength (180,000 psi for up to 1/2", 170,000 psi for 5/8" and larger). Durable high-strength fasteners for industrial and machinery applications. Made in the U.S.A.
Diameter: #4

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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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5/8"
#4-40
Coarse
100
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3/4"
#4-40
Coarse
100
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1"
#4-40
Coarse
100
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Diameter: #5

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1/4"
#5-40
Coarse
100
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3/8"
#5-40
Coarse
100
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1/2"
#5-40
Coarse
100
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5/8"
#5-40
Coarse
100
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3/4"
#5-40
Coarse
100
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Diameter: #6

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1/4"
#6-32
Coarse
100
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Premium USA Socket Head Cap Screws - Fine Thread (SAE)
Premium USA Socket Head Cap Screws - Fine Thread (SAE)
Premium USA socket head cap screws manufactured from ASTM A574 alloy steel with black oxide finish. Fine-thread SAE dimensions per ANSI/ASME B18.3 and high tensile strength up to 180,000 psi. Hex drive provides compact torque access, ideal for machinery and assemblies.
Diameter: #10

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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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1-1/4"
#10-32
Fine
100
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1-1/2"
#10-32
Fine
100
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1-3/4"
#10-32
Fine
100
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2"
#10-32
Fine
100
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2-1/4"
#10-32
Fine
100
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Fully Threaded Premium USA Socket Head Cap Screws - Coarse Thread (USS)
Fully Threaded Premium USA Socket Head Cap Screws - Coarse Thread (USS)
Fully threaded socket head cap screws made from ASTM A574 alloy steel with coarse USS threads and hex drive recess. Premium tensile strength (180,000 psi for up to 1/2", 170,000 psi for 5/8" and larger) and specified hardness provide high clamp load and durability. Suited for heavy duty assembly and machinery.
Diameter: #8

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1-1/4"
#8-32
Coarse
50
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1-1/2"
#8-32
Coarse
50
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1-3/4"
#8-32
Coarse
50
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2"
#8-32
Coarse
50
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Diameter: #10

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1-1/4"
#10-24
Coarse
50
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1-1/2"
#10-24
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50
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1-3/4"
#10-24
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50
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2"
#10-24
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50
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2-1/4"
#10-24
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50
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2-1/2"
#10-24
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50
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2-3/4"
#10-24
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50
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3"
#10-24
Coarse
50
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Socket Head Cap Screws - Black Oil Dipped, Coarse Thread (USS)
Socket Head Cap Screws - Black Oil Dipped, Coarse Thread (USS)
Socket head cap screws made from high-strength alloy steel with a black oil-dipped finish. Coarse USS threads and hex drive recesses conform to ANSI B18.3 and ASA 1960 series. High tensile ratings provide robust clamping and the oil-dip finish helps resist corrosion and reduce galling.
Diameter: #4

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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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7/8"
#4-40
Coarse
50
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1"
#4-40
Coarse
50
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1-1/4"
#4-40
Coarse
25
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1-1/2"
#4-40
Coarse
25
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1-3/4"
#4-40
Coarse
25
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2"
#4-40
Coarse
25
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Diameter: #5

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1/4"
#5-40
Coarse
50
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Socket Head Cap Screws - Black Oil Dipped, Fine Thread (SAE)
Socket Head Cap Screws - Black Oil Dipped, Fine Thread (SAE)
Socket head cap screws in alloy steel with a black oil-dipped finish and fine SAE threads. Hex drive socket head design conforms to ANSI B18.3 and ASA 1960 series, with high tensile strength (180,000 psi for up to 1/2", 170,000 psi for 5/8" and larger) that provides consistent clamp strength for machinery and assemblies.
Diameter: #6

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1/4"
#6-40
Fine
50
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3/8"
#6-40
Fine
50
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1/2"
#6-40
Fine
50
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5/8"
#6-40
Fine
50
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3/4"
#6-40
Fine
50
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Diameter: #8

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3/8"
#8-36
Fine
50
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1/2"
#8-36
Fine
50
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3/4"
#8-36
Fine
50
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Diameter: #10

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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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Socket Head Cap Screws - Zinc Plated, Coarse Thread (USS)
Socket Head Cap Screws - Zinc Plated, Coarse Thread (USS)
Socket head cap screws in alloy steel with zinc plating and coarse USS threads. Hex drive recess and ANSI/ASTM A574 construction deliver high tensile strength and corrosion resistance, providing durable fastenings for automotive, motorcycle and general industrial applications.
Diameter: #6

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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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3/4"
#6-32
Coarse
25
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1"
#6-32
Coarse
25
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Diameter: #8

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3/8"
#8-32
Coarse
25
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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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1"
#8-32
Coarse
25
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1-1/4"
#8-32
Coarse
25
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Socket Head Cap Screws - Zinc Plated, Fine Thread (SAE)
Socket Head Cap Screws - Zinc Plated, Fine Thread (SAE)
Socket head cap screws made from alloy steel with zinc plating and fine SAE threads. Conforms to ANSI B18.3 and ASTM A574 with high tensile strength, hex drive recess, and plated per ASTM B633 for improved corrosion resistance. Suitable for automotive and machinery applications.
Diameter: #10

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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
15
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7/8"
#10-32
Fine
15
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1"
#10-32
Fine
15
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Diameter: 1/4"

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1/2"
1/4"-28
Fine
15
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3/4"
1/4"-28
Fine
15
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1"
1/4"-28
Fine
15
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Diameter: 5/16"

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1/2"
5/16"-24
Fine
25
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3/4"
5/16"-24
Fine
25
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1"
5/16"-24
Fine
25
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Diameter: 3/8"

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3/4"
3/8"-24
Fine
15
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18-8 Stainless Steel Premium USA Socket Head Cap Screws - Coarse Thread (USS)
18-8 Stainless Steel Premium USA Socket Head Cap Screws - Coarse Thread (USS)
Premium 18-8 stainless steel socket head cap screws in USS coarse thread. Hex drive socket head construction provides compact, high-torque fastening and resists corrosion for general industrial and maintenance applications. Available in common diameters and lengths.
Diameter: 1/4"

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3/8"
1/4"-20
Coarse
25
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1/2"
1/4"-20
Coarse
25
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3/4"
1/4"-20
Coarse
25
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1"
1/4"-20
Coarse
25
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1-1/2"
1/4"-20
Coarse
25
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2"
1/4"-20
Coarse
10
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2-1/2"
1/4"-20
Coarse
10
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3"
1/4"-20
Coarse
10
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Diameter: 5/16"

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1/2"
5/16"-18
Coarse
25
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3/4"
5/16"-18
Coarse
25
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1"
5/16"-18
Coarse
25
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1-1/2"
5/16"-18
Coarse
10
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18-8 Stainless Steel Socket Head Cap Screws - Coarse Thread (USS)
18-8 Stainless Steel Socket Head Cap Screws - Coarse Thread (USS)
A selection of socket head cap screws made from 18-8 stainless steel in coarse USS threads with hex drive recesses. Corrosion-resistant material helps resist chemicals and outdoor exposure. Available in multiple diameters and lengths for general fastening and marine or processing applications.
Diameter: #4

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1/4"
#4-40
Coarse
50
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1/2"
#4-40
Coarse
50
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3/4"
#4-40
Coarse
50
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Diameter: #6

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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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1-1/4"
#6-32
Coarse
25
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1-1/2"
#8-32
Coarse
25
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Diameter: #8

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1/4"
#8-32
Coarse
50
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18-8 Stainless Steel Socket Head Cap Screws - Fine Thread (SAE)
18-8 Stainless Steel Socket Head Cap Screws - Fine Thread (SAE)
A selection of 18-8 stainless steel socket head cap screws with fine SAE threads and hex drive recesses. Precision fine threads provide closer pitch for secure clamping and improved adjustment. Corrosion-resistant stainless construction suits general-purpose fastening in machinery and assemblies.
Diameter: #10

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1/4"
#10-32
Fine
50
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5/16"
#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
10
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2"
#10-32
Fine
10
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316 Stainless Steel Socket Head Cap Screws - Coarse Thread (USS)
316 Stainless Steel Socket Head Cap Screws - Coarse Thread (USS)
Socket head cap screws made from 316 stainless steel with coarse USS threads and hex socket drive. Corrosion-resistant material provides durability in marine or outdoor applications. Available in a range of common diameters and lengths.
Diameter: #6

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3/8"
#6-32
Coarse
50
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1/2"
#6-32
Coarse
50
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1"
#6-32
Coarse
50
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Diameter: #8

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3/8"
#8-32
Coarse
50
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1/2"
#8-32
Coarse
50
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5/8"
#8-32
Coarse
50
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3/4"
#8-32
Coarse
50
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1"
#8-32
Coarse
50
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Diameter: #10

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3/8"
#10-24
Coarse
50
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1/2"
#10-24
Coarse
50
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5/8"
#10-24
Coarse
50
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3/4"
#10-24
Coarse
50
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