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1/2 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.

Socket Head Cap Screw (b18.2.1), showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
ParkerAZSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 11/2-13 x 1 socket head cap screw dfar s/s b18.2.1 b18.3 made in u.s.a.2,130
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Irwin IndOntSocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13 x 1 1/2 steel soc hd c/s plain b18.2.1 b18.3129
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Irwin IndOntSocket Head Cap ScrewSteelZinc/Clear1/2-20 x 11/2-20 x 1 socket capscrew alloy steel plated gm6174 b18.2.1 b18.3800
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Irwin IndOntSocket Head Cap ScrewSteelZinc/Black1/2-13 x 3 1/21/2-13 x 3-1/2 socket capscrew steel zinc trivalent black b18.2.1 b18.3195
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 101/2-13 x 10 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.)Plain1/2-13 x 11/2-13 x 1 soc cap screw s/s b18.2.1 b18.3150
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 11/2-13 x 1 soc cap screw alloy b18.2.1 b18.375
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 111/2-13 x 11 soc cap screw alloy b18.2.1 b18.340
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13 x 1 1/4 soc cap screw s/s b18.2.1 b18.370
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/41/2-13 x 1 1/4 soc cap screw alloy b18.2.1 b18.3310
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13 x 1-1/2 socket head cap screw bumax 88 b18.2.1 b18.310
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13 x 1 1/2 soc cap screw s/s b18.2.1 b18.3460
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13 x 1 1/2 soc cap screw alloy b18.2.1 b18.3250
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/41/2-13 x 1 3/4 soc cap screw s/s b18.2.1 b18.360
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 3/41/2-13 x 1 3/4 soc cap screw alloy b18.2.1 b18.375
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 21/2-13 x 2 soc cap screw s/s b18.2.1 b18.3115
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 21/2-13 x 2 soc cap screw alloy b18.2.1 b18.3308
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/41/2-13 x 2 1/4 soc cap screw s/s b18.2.1 b18.3106
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/41/2-13 x 2 1/4 soc cap screw alloy b18.2.1 b18.3191
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 2 1/21/2-13 2-1/2 socket head cap screw bumax 109 b18.2.1 b18.340
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/21/2-13 x 2 1/2 soc cap screw s/s b18.2.1 b18.345
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13 x 2 1/2 soc cap screw alloy b18.2.1 b18.3158
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 2 3/41/2-13 x 2 3/4 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 31/2-13 x 3 soc cap screw s/s b18.2.1 b18.355
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ASMCILSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/41/2-13x2 1/4 coarse socket hd cap screw ss18-8 b18.2.1 b18.3100
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ASMCILSocket Head Cap ScrewSteelPlain1/2-12 x 7bsw1/2-12x7 (pt) bsw socket hd c/s b18.2.1 b18.346
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 11/2-13 x 1 soc cap screw s/s b18.2.1 b18.320
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 11/2-13 x 1 soc cap screw alloy b18.2.1 b18.350
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13 x 1 1/4 soc cap screw s/s b18.2.1 b18.315
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/41/2-13 x 1 1/4 soc cap screw alloy b18.2.1 b18.375
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13 x 1 1/2 soc cap screw s/s b18.2.1 b18.345
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13 x 1 1/2 soc cap screw alloy b18.2.1 b18.350
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/41/2-13 x 1 3/4 soc cap screw s/s b18.2.1 b18.310
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 1 3/41/2-13 x 1 3/4 soc cap screw alloy b18.2.1 b18.375
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 21/2-13 x 2 soc cap screw s/s b18.2.1 b18.320
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 21/2-13 x 2 soc cap screw alloy b18.2.1 b18.375
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/41/2-13 x 2 1/4 soc cap screw s/s b18.2.1 b18.316
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/41/2-13 x 2 1/4 soc cap screw alloy b18.2.1 b18.3100
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13 x 2 1/2 soc cap screw alloy b18.2.1 b18.3150
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 2 3/41/2-13 x 2 3/4 soc cap screw alloy b18.2.1 b18.375
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AbabaCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 31/2-13 x 3 soc cap screw s/s b18.2.1 b18.35
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 31/2-13 x 3 soc cap screw alloy b18.2.1 b18.320
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 3 1/41/2-13 x 3 1/4 soc cap screw alloy b18.2.1 b18.345
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 3 1/21/2-13 x 3 1/2 soc cap screw alloy b18.2.1 b18.360
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AbabaCASocket Head Cap ScrewSteelPlain1/2-13 x 41/2-13 x 4 soc cap screw alloy b18.2.1 b18.330
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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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SIIINSocket Head Cap ScrewSteelPlain1/2-20 x 1 3/41/2-20 x 1-3/4 socket head cap screw b18.2.1 b18.325
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 11/2-13x1 shcs plain) b18.2.1 b18.3238
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 1 1/41/2-13x1-1/4 shcs) b18.2.1 b18.3325
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13x1-1/2 shcs plain) b18.2.1 b18.3305
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 1 3/41/2-13x1-3/4 shcs plain) b18.2.1 b18.3105
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 21/2-13x2 shcs plain) b18.2.1 b18.360
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 2 1/41/2-13x2-1/4 shcs plain) b18.2.1 b18.3160
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13x2-1/2 shcs plain) b18.2.1 b18.335
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 31/2-13x3 shcs plain) b18.2.1 b18.378
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 3 3/41/2-13 x 3-3/4 socket head cap screw b18.2.1 b18.375
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SIIINSocket Head Cap ScrewSteelPlain1/2-13 x 41/2-13x4 shcs plain) b18.2.1 b18.345
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 141/2-13x14 socket c/s alloy b18.2.1 b18.328
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13x1 1/2 soc c/s alloy plain b18.2.1 b18.3100
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QFCTXSocket Head Cap ScrewSteelPlain1/2-20 x 1 1/21/2-20x1 1/2 soc c/s alloy plain b18.2.1 b18.320
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 21/2-13x2 soc c/s alloy plain b18.2.1 b18.37
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 21/2-13x2 soc c/s alloy plain b18.2.1 b18.3205
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13x2 1/2 soc c/s alloy plain b18.2.1 b18.325
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 41/2-13x4 soc c/s alloy plain b18.2.1 b18.362
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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 ScrewSteelPlain1/2 x 5 1/21/2x5 1/2nc socket head cap sc b18.2.1 b18.319
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QFCTXSocket Head Cap ScrewSteelPlain1/2 x 6 1/21/2x6-1/2 nc socket cap screws b18.2.1 b18.34
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QFCTXSocket Head Cap ScrewSteelPlain1/2-13 x 81/2-13x8 soc c/s alloy plain b18.2.1 b18.320
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 5/81/2-13x5/8 socket set screw cup point 18-8 s/s steel domestic b18.2.1 b18.3620
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/41/2-13x3/4 socket cap screw 18-8 s/s b18.2.1 b18.3340
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 3/41/2-13x2-3/4 socket head cap screw ss domestic 100ksi b18.2.1 b18.3145
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 3/41/2-13x2-3/4 socket head cap screw ss domestic 100ksi b18.2.1 b18.3100
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QFCTXSocket Head Cap ScrewSteelGalvanized1/2 x 5 1/21/2x5-1/2nc m/g skt hd cap screw b18.2.1 b18.373
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QFCTXSocket Head Cap ScrewSteelZinc/Clear1/2-13 x 1 1/41/2-13x1-1/4 soc c/s alloy mzinc b18.2.1 b18.33250
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 3/41/2-13x3-3/4 socket cap screw 170 ksi 18-8 ss b18.2.1 b18.32
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13x1 1/4 soc c/s 18-8 b18.2.1 b18.317
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QFCTXSocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13x1 1/2 soc c/s 18-8 b18.2.1 b18.318
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 61/2-13 x 6 socket cap screws b18.2.1 b18.313
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/41/2-13 x 1 1/4 l.h. socket cap screws b18.2.1 b18.312
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 11/2-13 x 1 low head socket cap screws b18.2.1 b18.316
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/41/2-13 x 1 1/4 socket cap screws b18.2.1 b18.31266
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B & K FASTPASocket Head Cap ScrewSteelZinc/Clear1/2-13 x 1 1/41/2-13 x 1 1/4 socket cap screws zinc b18.2.1 b18.39
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13 x 1 1/2 socket cap screws b18.2.1 b18.3268
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 1 1/21/2-13 x 1 1/2 low head socket cap screws b18.2.1 b18.3103
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 1 3/41/2-13 x 1 3/4 low head socket cap screws b18.2.1 b18.350
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 21/2-13 x 2 socket cap screws b18.2.1 b18.3104
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13 x 2 1/2 socket cap screws b18.2.1 b18.348
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13 x 2 1/2 socket cap screws full thread b18.2.1 b18.39
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/21/2-13 x 2 1/2 low head socket cap screws b18.2.1 b18.39
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 2 3/41/2-13 x 2 3/4 socket cap screws b18.2.1 b18.3237
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 31/2-13 x 3 socket cap screws full thread b18.2.1 b18.345
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 3 3/41/2-13 x 3 3/4 socket cap screws b18.2.1 b18.3141
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 41/2-13 x 4 socket cap screws b18.2.1 b18.3262
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 51/2-13 x 5 socket cap screws b18.2.1 b18.3363
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 5 1/21/2-13 x 5 1/2 socket cap screws b18.2.1 b18.3100
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 8 1/21/2-13 x 8 1/2 socket cap screws b18.2.1 b18.312
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B & K FASTPASocket Head Cap ScrewSteelPlain1/2-13 x 111/2-13 x 11 socket cap screws b18.2.1 b18.341
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-13 x 6 1/2cap screw socket 1/213x6-1/2 alloy steel # r b18.2.1 b18.34
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-13 x 7 1/2cap screw socket 1/213x7-1/2 alloy steel b18.2.1 b18.365
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JET FITTINGCASocket Head Cap ScrewSteelCadmium1/2-13 x 1cap screw socket 1/213x1 alloy steel cadmium plated b18.2.1 b18.376
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1cap screw socket 1/213x1 stainless steel b18.2.1 b18.344
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/2cap screw socket 1/213x1-1/2 stainless steel b18.2.1 b18.334
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/4cap screw socket 1/213x1-3/4 stainless steel b18.2.1 b18.32
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/2cap screw socket 1/213x2-1/2 alloy steel b18.2.1 b18.345
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/2cap screw socket 1/213x2-1/2 stainless steel b18.2.1 b18.342
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-13 x 2 3/4cap screw socket 1/213x2-3/4 alloy steel # r b18.2.1 b18.365
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-13 x 2 1/41/2-13x2 1/4 (pt) socket screws socket head cap screws socket cap screw thermal black oxide alloy (inch) b18.2.1 b18.350
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JET FITTINGCASocket Head Cap ScrewSteelBlack Oxide1/2-13 x 11/2-13x1 socket head cap screws alloy steel coarse thread black oxide dfar made in usa quantity 100 b18.2.1 b18.3100
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WurthOntSocket Head Cap ScrewSteelPlain1/2-20 x 1 3/4scr shcs alloy 1/2-20x1 3/4 b18.2.1 b18.338
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 3/4cap screw socket 1/213x2-3/4 stainless steel b18.2.1 b18.313
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-13 x 5 1/2cap screw socket 1/213x5-1/2 alloy steel# r b18.2.1 b18.320
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JET FITTINGCASocket Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 3/4cap screw socket 1/220x1-3/4 stainless steel b18.2.1 b18.341
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JET FITTINGCASocket Head Cap ScrewSteelPlain1/2-20 x 2 3/4cap screw socket 1/220x2-3/4 alloy steel # r b18.2.1 b18.3124
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