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#5 Socket Cap Screws (ASME B18. 2.1)

Socket Head Cap Screws are typically used in machine parts, die fixturing, and clamping. Socket head cap screws have a flat faced, circular raised head with an indented hex socket. They can be fully or part threaded, are usually manufactured from high grade alloy steel. Dimensionally, metric socket head cap screws are covered by the relevant DIN, ISO or JIS standards, but US/Imperial socket head cap screws are covered by the ASME B18.2.1 and B18.3 specifications.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 15-40 x 1 soc cap screw s/s b18.2.1 b18.3295
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AbabaCASocket Head Cap ScrewSteelPlain#5-40 x 1/25-40 x 1/2 soc cap screw alloy b18.2.1 b18.31700
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 3/45-40 x 3/4 soc cap screw s/s b18.2.1 b18.3100
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 1/45-40 x 1/4 soc cap screw s/s b18.2.1 b18.3100
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GLFOHSocket Head Cap ScrewSteelPlain#5-40 x 1/2#5-40x1/2 shcs stl pln b18.2.1 b18.3 () () ()2354
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GLFOHSocket Head Cap ScrewSteelPlain#5-40 x 1 1/4#5-40x1-1/4 shcs stl pln b18.2.1 b18.3 () () ()51
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GLFOHSocket Head Cap ScrewSteelCadmium#5-40 x 3/8#5-40x3/8 shcs stl cad domestic dfar b18.2.1 b18.3 () () ()100
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GLFOHSocket Head Cap ScrewSteelPlain#5-40 x 5/165-40x5/16 socket head cap screw-plain b18.2.1 b18.3 () () ()98
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ASMCILSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 2 1/2#5-40x2 1/2 coarse socket hd cap screw ss18-8 b18.2.1 b18.365
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ASMCILSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 7/8#5-40x7/8 coarse socket hd cap screw ss18-8 b18.2.1 b18.375
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AbabaCASocket Head Cap ScrewSteelPlain#5-40 x 3/85-40 x 3/8 soc cap screw alloy b18.2.1 b18.3100
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AbabaCASocket Head Cap ScrewSteelPlain#5-40 x 5/85-40 x 5/8 soc cap screw alloy b18.2.1 b18.3100
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EximS'poreSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 5/16screw socket head cap hexs/s natural#5-40 x 5/16 in b18.2.1 b18.3200
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EximS'poreSocket Head Cap ScrewSteelBlack Oxide#5-40 x 3/4screw socket head cap hexsteel black oxide unc 3a# 5-40 x 3/4 in. b18.2.1 b18.33050
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JET FITTINGCASocket Head Cap ScrewSteelPlain#5-44 x 3/8#5-44x3/8 shcs stl black 581184 b18.2.1 b18.359
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 3/8#5-40x3/8 shcs ss a2 592103 b18.2.1 b18.38100
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JET FITTINGCASocket Head Cap ScrewSteelPlain#5-44 x 1#5-44x1 shcs stl black 581194 b18.2.1 b18.3100
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 1/2#5-40x1/2 shcs ss a2 592105 b18.2.1 b18.3200
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StandardMASocket Head Cap Screw316, 317, A4 StainlessPlain#5-40 x 15-40x1 socket cap screw 316 stainless steel b18.2.1 b18.313100
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StandardMASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 15-40x1 socket cap screw 18-8 stainless steel b18.2.1 b18.312617
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StandardMASocket Head Cap Screw316, 317, A4 StainlessPlain#5-40 x 1/45-40x1/4 socket cap screw 316 stainless steel b18.2.1 b18.3-13600
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StandardMASocket Head Cap Screw316, 317, A4 StainlessPlain#5-44 x 1/25-44x1/2 socket cap screw 316 stainless steel b18.2.1 b18.312371
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StandardMASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 1/25-40x1/2 socket cap screw 18-8 stainless steel b18.2.1 b18.313228
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StandardMASocket Head Cap Screw316, 317, A4 StainlessPlain#5-44 x 1/45-44x1/4 socket cap screw 316 stainless steel b18.2.1 b18.35037
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StandardMASocket Head Cap Screw316, 317, A4 StainlessPlain#5-44 x 3/85-44x3/8 socket cap screw 316 stainless steel b18.2.1 b18.31999
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Marine FastenersFLSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 3/85-40x3/8 socket head cs ss b18.2.1 b18.3100800
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Marine FastenersFLSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 15-40x1 socket cs ss b18.2.1 b18.333500
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Bostwick INSocket Head Cap ScrewSteelPlain#5-40 x 5/85-40 x 5/8 socket cap screw alloy b18.2.1 b18.3163
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Bostwick INSocket Head Cap ScrewSteelPlain#5-40 x 1/25-40 x 1/2 socket cap screw (usa mfg) alloy b18.2.1 b18.3200
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Bostwick INSocket Head Cap ScrewSteelPlain#5-40 x 1/45-40 x 1/4 socket cap screw (usa mfg) alloy b18.2.1 b18.3185
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Bostwick INSocket Head Cap ScrewSteelPlain#5-40 x 3/45-40 x 3/4 socket cap screw (usa mfg) alloy b18.2.1 b18.3100
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JET FITTINGCASocket Head Cap ScrewSteelPlain#5-40 x 3/4cap screw socket 540x3/4 alloy steel b18.2.1 b18.3335
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JET FITTINGCASocket Head Cap ScrewSteelPlain#5-40 x 3/16#5-40x3/16 (ft) socket screws socket head cap screws socket cap screw thermal black oxide alloy (inch) b18.2.1 b18.3500
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 3/8cap screw socket 540x3/8 stainless steel b18.2.1 b18.38142
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THRDFASTFLSocket Head Cap ScrewSteelPlain#5-40 x 5/8socket c/s b18.2.1 b18.335
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THRDFASTALSocket Head Cap ScrewSteelPlain#5-40 x 3/4socket c/s b18.2.1 b18.385
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THRDFASTALSocket Head Cap ScrewSteelPlain#5-40 x 5/8socket c/s b18.2.1 b18.387
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THRDFASTALSocket Head Cap ScrewSteelPlain#5-40 x 3/8socket c/s b18.2.1 b18.354
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All SizeTXSocket Head Cap ScrewSteelPlain#5-40 x 1/25-40 x 1/2 socket head cap screw b18.2.1 b18.3220
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All SizeTXSocket Head Cap ScrewSteelPlain#5-40 x 5/85-40 x 5/8 socket head cap screw b18.2.1 b18.3244
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All SizeTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 1/45-40 x 1/4 socket head cap screw s/s b18.2.1 b18.382
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All SizeTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#5-40 x 3/85-40 x 3/8 socket head cap screw s/s b18.2.1 b18.350
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All SizeTXSocket Head Cap ScrewSteelPlain#5-40 x 5/165-40 x 5/16 socket head cap screw b18.2.1 b18.376
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