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Product Type
Cap Screw
Diameter
1"
1/2"
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3/4"
3/8"
5/16"
5/8"
7/16"
7/8"
9/16"
Length
1"
1-1/2"
1-1/4"
1-3/4"
1/2"
10"
12"
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2-1/2"
2-1/4"
2-3/4"
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3-1/4"
3-3/4"
3/4"
4"
4-1/2"
5"
5-1/2"
5/8"
6"
7"
7-1/2"
7/8"
8"
Material
Steel
Thread Type
Coarse
Threads Per Inch
8
9
10
11
12
13
14
16
18
20
Head Type
Hex
Steel Grade
2
Drive Type
Hex
Finish
Zinc Plated
Product Type
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 Cap Screw(180)
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Diameter
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 1"(12)
 1/2"(24)
 1/4"(21)
 3/4"(16)
 3/8"(21)
 5/16"(22)
 5/8"(16)
 7/16"(18)
 7/8"(15)
 9/16"(15)
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Length
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 1"(8)
 1-1/2"(9)
 1-1/4"(8)
 1-3/4"(9)
 1/2"(3)
 10"(2)
 12"(1)
 2"(10)
 2-1/2"(10)
 2-1/4"(10)
 2-3/4"(10)
 3"(14)
 3-1/2"(6)
 3-1/4"(10)
 3-3/4"(2)
 3/4"(5)
 4"(10)
 4-1/2"(11)
 5"(10)
 5-1/2"(10)
 5/8"(3)
 6"(10)
 7"(1)
 7-1/2"(2)
 7/8"(4)
 8"(2)
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Material
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 Steel(180)
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Thread Type
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 Coarse(180)
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Threads Per Inch
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 8(12)
 9(15)
 10(16)
 11(16)
 12(15)
 13(24)
 14(18)
 16(21)
 18(22)
 20(21)
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Head Type
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 Hex(180)
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Steel Grade
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 2(180)
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Drive Type
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 Hex(180)
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Finish
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 Zinc Plated(180)
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Hex Grade 2 Zinc Plated

Hex head cap screws are manufactured to dimensional standards of ASME B18.2.1 and to various material and mechanical standards of ASTM and SAE. The length of a cap screw is measured from under the head to the extreme end of the screw. The standard thread length is two times the diameter plus 1/4" up to 6" length and two times the diameter plus 1/2" for screws longer than 6". Shorter length screws are fully threaded. Product standards require the manufacturer's head marking to appear on the top of all hex cap screws 1/4" diameter and larger.

Grade 2 (A307A) Cap screws are fasteners made from low carbon steel that achieve their strength primarily from cold working during the cold forming manufacturing operation. Economical for use in non-critical applications where the fastener is not subject to extreme temperatures or stress.

   

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