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4 1/2 inch length 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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Search Results Sponsored by Parker Fasteners, your source for Socket Head Cap Screws. For more results, visit   www.parkerfasteners.com
SupplierLocTypeMaterialFinishSizeDescriptionQty 
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GLFOHSocket Head Cap ScrewSteelPlain1/2-13 x 4 1/21/2-13x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()75
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GLFOHSocket Head Cap ScrewSteelZinc/Clear1/2-13 x 4 1/21/2-13x4-1/2 shcs stl zc b18.2.1 b18.3 () () ()20
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GLFOHSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()8
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GLFOHSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 4 1/21/4-20x4-1/2 shcs 18-8 s/s b18.2.1 b18.3 () () ()697
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GLFOHSocket Head Cap ScrewSteelPlain3/8-16 x 4 1/23/8-16x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()150
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GLFOHSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 4 1/25/16-18x4-1/2 shcs 18-8 s/s b18.2.1 b18.3 () () ()71
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GLFOHSocket Head Cap ScrewSteelPlain5/8-11 x 4 1/25/8-11x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()84
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GLFOHSocket Head Cap ScrewSteelPlain7/16-14 x 4 1/27/16-14x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()35
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GLFOHSocket Head Cap ScrewSteelPlain5/16-18 x 4 1/25/16-18x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()41
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GLFOHSocket Head Cap ScrewSteelPlain3/4-10 x 4 1/23/4-10x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()38
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GLFOHSocket Head Cap ScrewSteelZinc/Clear7/16-14 x 4 1/27/16-14x4-1/2 shcs stl zc b18.2.1 b18.3 () () ()750
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GLFOHSocket Head Cap ScrewSteelPlain1 1/4-7 x 4 1/21-1/4-7x4-1/2 shcs stl pln b18.2.1 b18.3 () () ()8
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AbabaCASocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4 1/2 soc cap screw alloy b18.2.1 b18.3326
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AbabaCASocket Head Cap ScrewSteelPlain5/16-18 x 4 1/25/16-18 x 4 1/2 soc cap screw alloy b18.2.1 b18.3175
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AbabaCASocket Head Cap ScrewSteelPlain5/16-24 x 4 1/25/16-24 x 4 1/2 inch soc cap screw alloy b18.2.1 b18.3186
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 4 1/23/8-16 x 4 1/2 soc cap screw s/s b18.2.1 b18.336
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AbabaCASocket Head Cap ScrewSteelPlain3/8-16 x 4 1/23/8-16 x 4 1/2 soc cap screw alloy b18.2.1 b18.3150
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 4 1/21/2-13 x 4 1/2 soc cap screw s/s b18.2.1 b18.371
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AbabaCASocket Head Cap ScrewSteelPlain1/2-20 x 4 1/21/2-20 x 4 1/2 soc cap screw alloy b18.2.1 b18.34
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AbabaCASocket Head Cap ScrewSteelPlain5/8-11 x 4 1/25/8-11 x 4 1/2 soc cap screw alloy b18.2.1 b18.335
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AbabaCASocket Head Cap ScrewSteelPlain3/4-16 x 4 1/23/4-16 x 4 1/2 soc cap screw alloy b18.2.1 b18.321
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AbabaCASocket Head Cap ScrewSteelPlain5/8-18 x 4 1/25/8-18 x 4 1/2 soc cap screw alloy b18.2.1 b18.319
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AbabaCASocket Head Cap ScrewSteelPlain3/4-10 x 4 1/23/4-10 x 4 1/2 soc cap screw alloy b18.2.1 b18.326
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AbabaCASocket Head Cap ScrewSteelPlain1-8 x 4 1/21-8 x 4 1/2 soc cap screw alloy b18.2.1 b18.312
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AbabaCASocket Head Cap ScrewSteelPlain1-14 x 4 1/21-14 x 4 1/2 soc cap screw alloy b18.2.1 b18.31
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ASMCILSocket Head Cap ScrewSteelPlain9/16-18 x 4 1/29/16-18x4 1/2 (ft) fine socket hd cap screw alloy pln b18.2.1 b18.320
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ASMCILSocket Head Cap ScrewSteelPlain5/8-11 x 4 1/25/8-11x4 1/2 unc socket hd cap screw-usa alloy blox b18.2.1 b18.360
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ASMCILSocket Head Cap ScrewSteelPlain3/4-16 x 4 1/2(pt) fine socket hd c/s b18.2.1 b18.313
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ASMCILSocket Head Cap ScrewSteelPlain1-8 x 4 1/2(pt) coarse socket hd c/s nylon pellet b18.2.1 b18.32
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AbabaCASocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4 1/2 soc cap screw alloy b18.2.1 b18.325
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 4 1/25/16-18 x 4 1/2 soc cap screw s/s b18.2.1 b18.31
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AbabaCASocket Head Cap ScrewSteelPlain5/16-18 x 4 1/25/16-18 x 4 1/2 soc cap screw alloy b18.2.1 b18.345
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AbabaCASocket Head Cap ScrewSteelPlain3/8-16 x 4 1/23/8-16 x 4 1/2 soc cap screw alloy b18.2.1 b18.3100
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 4 1/21/2-13 x 4 1/2 soc cap screw s/s b18.2.1 b18.315
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 4 1/21/2-13 x 4 1/2 soc cap screw alloy b18.2.1 b18.3100
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 4 1/21/2-13 x 4 1/2 soc cap screw alloy b18.2.1 b18.330
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AbabaCASocket Head Cap ScrewSteelPlain5/8-11 x 4 1/25/8-11 x 4 1/2 soc cap screw alloy b18.2.1 b18.330
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AbabaCASocket Head Cap ScrewSteelPlain3/4-16 x 4 1/23/4-16 x 4 1/2 soc cap screw alloy b18.2.1 b18.31
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Alma BoltMISocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 4 1/25/16-18 x 4 1/2 st. st. socket head cap screw b18.2.1 b18.3750
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SIIINSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4-1/2 socket head cap screw b18.2.1 b18.3400
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JET FITTINGCASocket Head Cap ScrewSteelPlain5/16-18 x 4 1/25/16-18x4-1/2 shcs p/t alloy steel black 581433 b18.2.1 b18.3365
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StandardMASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 4 1/25/8-11x4-1/2 socket cap screw 18-8 stainless steel b18.2.1 b18.3414
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QFCTXSocket Head Cap ScrewSteelPlain5/16-18 x 4 1/25/16-18x4 1/2 soc c/s alloy plain b18.2.1 b18.330
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 4 1/21/2-13x4 1/2 soc c/s alloy plain b18.2.1 b18.353
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QFCTXSocket Head Cap ScrewSteelGalvanized3/8-16 x 4 1/23/8-16x4 1/2 soc c/s mech galv b18.2.1 b18.3185
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QFCTXSocket Head Cap ScrewSteelGalvanized3/8-16 x 4 1/23/8-16x4 1/2 soc c/s mech galv b18.2.1 b18.3175
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B & K FASTPASocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4 1/2 socket cap screws b18.2.1 b18.325
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B & K FASTPASocket Head Cap ScrewSteelPlain7/8-9 x 4 1/27/8-9 x 4 1/2 socket cap screws b18.2.1 b18.320
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B & K FASTPASocket Head Cap ScrewSteelPlain1-8 x 4 1/21-8 x 4 1/2 socket cap screws b18.2.1 b18.39
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B & K FASTPASocket Head Cap ScrewSteelPlain1 1/4-7 x 4 1/21 1/4-7 x 4 1/2 socket cap screws b18.2.1 b18.36
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B & K FASTPASocket Head Cap ScrewSteelPlain1 1/4-12 x 4 1/21 1/4-12 x 4 1/2 socket cap screws b18.2.1 b18.34
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B & K FASTPASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 4 1/25/16-18 x 4 1/2 socket cap screws 18-8 ss b18.2.1 b18.315
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OSSCORISocket Head Cap ScrewSteelPlain1-8 x 4 1/21-8x4 1/2 socket cap screw b18.2.1 b18.39
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OSSCORISocket Head Cap ScrewSteelPlain3/4-10 x 4 1/23/4-10x4 1/2 socket cap screw blue devil b18.2.1 b18.35
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QFCTXSocket Head Cap ScrewSteelPlain#10-32 x 4 1/210/32x4 1/2 socket cap screw b18.2.1 b18.375
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QFCTXSocket Head Cap ScrewSteelZinc/Clear1/2-13 x 4 1/21/2-13x4 1/2 soc c/s alloy bright zinc b18.2.1 b18.34
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Bostwick INSocket Head Cap ScrewSteelPlain#10-32 x 4 1/210-32 x 4 1/2 socket cap screw alloy b18.2.1 b18.3100
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Bostwick INSocket Head Cap ScrewSteelPlain7/8-9 x 4 1/27/8-9 x 4 1/2 socket cap screw alloy b18.2.1 b18.372
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Bostwick INSocket Head Cap ScrewSteelPlain7/8-9 x 4 1/27/8-9 x 4 1/2 socket cap screw (usa mfg) alloy b18.2.1 b18.310
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Bostwick INSocket Head Cap ScrewSteelPlain5/8-18 x 4 1/25/8-18 x 4 1/2 socket cap screw (usa mfg) alloy b18.2.1 b18.310
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Bostwick INSocket Head Cap ScrewSteelPlain7/16-14 x 4 1/27/16-14 x 4 1/2 socket cap screw (usa mfg) alloy b18.2.1 b18.320
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Bostwick INSocket Head Cap ScrewSteelPlain5/8-18 x 4 1/25/8-18 x 4 1/2 socket cap screw alloy b18.2.1 b18.35
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/4-20 x 4 1/2cap screw socket 1/420x4-1/2 alloy steel b18.2.1 b18.363
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NWFASTTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 4 1/25/8-11 x 4 1/2 socket head cap screw 18-8 stainless steel b18.2.1 b18.328
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JET FITTINGCASocket Head Cap ScrewSteelPlain3/4-10 x 4 1/2cap screw socket 3/410x4-1/2 alloy steel b18.2.1 b18.320
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THRDFASTFLSocket Head Cap ScrewSteelPlain#10-24 x 4 1/2socket c/s b18.2.1 b18.31,224
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THRDFASTFLSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/2socket c/s b18.2.1 b18.3159
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THRDFASTFLSocket Head Cap ScrewSteelPlain1/2-13 x 4 1/2socket c/s b18.2.1 b18.340
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THRDFASTFLSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 4 1/218-8 ss socket c/s b18.2.1 b18.335
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THRDFASTFLSocket Head Cap ScrewSteelPlain3/4-10 x 4 1/2socket c/s b18.2.1 b18.322
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THRDFASTFLSocket Head Cap ScrewSteelPlain3/8-16 x 4 1/2socket c/s b18.2.1 b18.311
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THRDFASTFLSocket Head Cap ScrewSteelPlain1-8 x 4 1/2socket c/s b18.2.1 b18.34
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THRDFASTFLSocket Head Cap ScrewSteelPlain7/8-9 x 4 1/2socket c/s b18.2.1 b18.34
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THRDFASTFLSocket Head Cap ScrewSteelPlain7/8-9 x 4 1/2socket c/s b18.2.1 b18.322
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THRDFASTFLSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/2socket c/s b18.2.1 b18.317
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THRDFASTOKSocket Head Cap Screw316, 317, A4 StainlessPlain1/2-13 x 4 1/2t-316 ss socket c/s b18.2.1 b18.314
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THRDFASTOKSocket Head Cap Screw316, 317, A4 StainlessPlain3/4-10 x 4 1/2t-316 ss socket c/s b18.2.1 b18.311
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THRDFASTTNSocket Head Cap ScrewSteelPlain7/16-14 x 4 1/2socket c/s b18.2.1 b18.325
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THRDFASTMSSocket Head Cap ScrewSteelPlain3/4-10 x 4 1/2socket c/s b18.2.1 b18.38
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THRDFASTMSSocket Head Cap ScrewSteelPlain1/2-13 x 4 1/2socket c/s b18.2.1 b18.350
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KBSTNSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4 1/2 soc capscrew b18.2.1 b18.31,830
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KBSTNSocket Head Cap ScrewSteelPlain5/8-18 x 4 1/25/8-18 x 4 1/2 soc capscrew b18.2.1 b18.3114
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THRDFASTALSocket Head Cap ScrewSteelPlain3/8-16 x 4 1/2socket c/s b18.2.1 b18.3117
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THRDFASTALSocket Head Cap ScrewSteelPlain1/2-13 x 4 1/2socket c/s b18.2.1 b18.319
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THRDFASTALSocket Head Cap ScrewSteelPlain#10-24 x 4 1/2socket c/s b18.2.1 b18.360
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THRDFASTALSocket Head Cap ScrewSteelPlain7/8-9 x 4 1/2socket c/s b18.2.1 b18.38
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THRDFASTOKSocket Head Cap ScrewSteelPlain3/8-16 x 4 1/2socket c/s b18.2.1 b18.325
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THRDFASTMSSocket Head Cap ScrewSteelZinc/Clear3/4-10 x 4 1/2socket c/s b18.2.1 b18.33
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THRDFASTMSSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/2socket c/s b18.2.1 b18.37
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THRDFASTALSocket Head Cap ScrewSteelPlain1/4-20 x 4 1/2socket c/s b18.2.1 b18.357
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THRDFASTOKSocket Head Cap ScrewSteelPlain3/4-10 x 4 1/2socket c/s b18.2.1 b18.35
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THRDFASTALSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 4 1/218-8 ss socket c/s b18.2.1 b18.35
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THRDFASTMSSocket Head Cap ScrewSteelPlain5/8-11 x 4 1/2socket c/s b18.2.1 b18.36
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WSBKYSocket Head Cap ScrewSteelPlain3/4-10 x 4 1/2cap screw hex soc ft all (pl) 3/4-10x4 1/2 b18.2.1 b18.3151
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WSBKYSocket Head Cap ScrewASTM A320 L7, L7MZinc/Clearq/ cap screw hex soc l7 (zn) 1 1/2-6x4 1/2 b18.2.1 b18.32
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MMFMISocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4-1/2 shcs plain usa b18.2.1 b18.338
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MMFMISocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4-1/2 shcs plain usa b18.2.1 b18.338
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MMFMISocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4-1/2 shcs plain usa b18.2.1 b18.338
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MMFMISocket Head Cap ScrewSteelPlain1/4-20 x 4 1/21/4-20 x 4-1/2 shcs plain usa b18.2.1 b18.338
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Coburn Myers Fastening SystemsPASocket Head Cap ScrewGrade B7Plain1 1/4-7 x 4 1/2socket cap screw a193-b7 plain b18.2.1 b18.3100
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Coburn Myers Fastening SystemsPASocket Head Cap ScrewGrade B7Plain1 1/4-8 x 4 1/2socket cap screw a193-b7 plain b18.2.1 b18.3100
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Coburn Myers Fastening SystemsPASocket Head Cap ScrewGrade B7Plain1 1/4-12 x 4 1/2socket cap screw a193-b7 plain b18.2.1 b18.3100
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Coburn Myers Fastening SystemsPASocket Head Cap ScrewGrade B7Plain1 1/2-8 x 4 1/2socket cap screw a193-b7 plain b18.2.1 b18.3100
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Coburn Myers Fastening SystemsPASocket Head Cap ScrewGrade B7Plain1 1/2-6 x 4 1/2socket cap screw a193-b7 plain b18.2.1 b18.3100
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Coburn Myers Fastening SystemsPASocket Head Cap ScrewGrade B7Plain1 1/2-12 x 4 1/2socket cap screw a193-b7 plain b18.2.1 b18.3100
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All SizeTXSocket Head Cap ScrewSteelPlain5/16-18 x 4 1/25/16-18 x 4 1/2 socket head cap screw b18.2.1 b18.359
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All SizeTXSocket Head Cap ScrewSteelPlain1/2-20 x 4 1/21/2-20 x 4 1/2 socket cap screw b18.2.1 b18.394
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All SizeTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 4 1/23/8-16 x 4 1/2 socket head cap screw s/s b18.2.1 b18.359
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All SizeTXSocket Head Cap ScrewSteelPlain5/8-11 x 4 1/25/8-11 x 4 1/2 socket head cap screw b18.2.1 b18.379
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All SizeTXSocket Head Cap ScrewSteelPlain5/16-24 x 4 1/25/16-24 x 4 1/2 socket head cap screw b18.2.1 b18.323
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All SizeTXSocket Head Cap ScrewSteelPlain1 1/2-6 x 4 1/21 1/2-6 x 4 1/2 socket head cap screw b18.2.1 b18.32
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All SizeTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-9 x 4 1/27/8-9 x 4-1/2 socket cap screw-ss b18.2.1 b18.35
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DavisILSocket Head Cap ScrewSteelZinc/Black5/16-18 x 4 1/25/16-18 x 4-1/2 skt. cap screw-alloy black zinc 1-3/8 thread length b18.2.1 b18.3200
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FACCAOntSocket Head Cap ScrewSteelPlain1-8 x 4 1/2hex socket cap screw 1960 series 1-8 unc x 4 1/2 alloy steel quenched & tempered plain finish ansi b18.3-1986 b18.2.1 b18.3225
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