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5 inch length Flat Head Cap Screws (ASME B18. 3)

Flat Head Socket Cap Screws are designed to be seated in countersunk holes, and align flush with the surface of the assembly when installed. Flat head socket cap screws have a flat top surface, an indented hex and a conical bearing surface with a head angle of 82°. Flat head socket cap screws are commonly used in machine parts, die fixturing, and clamping.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
AbabaCAFlat Head Socket Cap ScrewSteelPlain3/8-16 x 53/8-16 x 5 flt soc cap alloy b18.2.1 b18.340
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AbabaCAFlat Head Socket Cap ScrewSteelPlain1/2-13 x 51/2-13 x 5 flat soc cap screw alloy b18.2.1 b18.333
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AbabaCAFlat Head Socket Cap ScrewSteelPlain1-8 x 51-8 x 5 flat soc cap screw alloy b18.2.1 b18.314
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GLFOHFlat Head Socket Cap ScrewSteelPlain3/4-10 x 53/4-10x5 flat stl pln b18.2.1 b18.3 () () ()42
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ASMCILFlat Head Socket Cap ScrewSteelPlain7/8-9 x 57/8-9x5 (pt) coarse socket flat hd cap screw alloy pln b18.2.1 b18.34
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AbabaCAFlat Head Socket Cap ScrewSteelPlain3/8-16 x 53/8-16 x 5 flt soc cap alloy b18.2.1 b18.335
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SIIINFlat Head Socket Cap ScrewSteelBlack Oxide3/8-16 x 53/8-16 x 5 black oxide finish flat socket cap screw) b18.2.1 b18.388
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BIG BOLTILFlat Head Socket Cap ScrewSteelPlain1/2-13 x 5bolt & c/s flat socket c/s flat socket b18.31000
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StandardMAFlat Head Socket Cap Screw316, 317, A4 StainlessPlain3/8-16 x 53/8-16x5 flat head socket cap screw 316 stainless steel b18.2.1 b18.33078
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B & K FASTPAFlat Head Socket Cap ScrewSteelPlain3/8-16 x 53/8-16 x 5 flat hd socket cap screws b18.2.1 b18.350
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B & K FASTPAFlat Head Socket Cap ScrewSteelPlain5/8-11 x 55/8-11 x 5 flat hd socket cap screw b18.2.1 b18.350
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B & K FASTPAFlat Head Socket Cap ScrewSteelPlain3/4-10 x 53/4-10 x 5 flat hd socket cap screws b18.2.1 b18.39
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B & K FASTPAFlat Head Socket Cap ScrewSteelPlain7/8-9 x 57/8-9 x 5 flat hd socket cap screws b18.2.1 b18.35
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B & K FASTPAFlat Head Socket Cap ScrewSteelPlain1-8 x 51-8 x 5 flat hd socket cap screws b18.2.1 b18.32
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Marine FastenersFLFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 55/8-11x5 flat socket cs ss b18.2.1 b18.3519
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Marine FastenersFLFlat Head Socket Cap Screw316, 317, A4 StainlessPlain1/4-20 x 51/4-20x5 flat socket cs 316ss 316ss b18.2.1 b18.32185
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Marine FastenersFLFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 53/8-16x5 flat soc cs ss b18.2.1 b18.3933
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Marine FastenersFLFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 53/4-10 x 5 flat soc cs ss b18.2.1 b18.3500
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OSSCORIFlat Head Socket Cap ScrewSteelPlain3/8-16 x 53/8-16x5 flat soc cap screw b18.2.1 b18.323
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QFCTXFlat Head Socket Cap ScrewSteelGalvanized1/2 x 51/2x5 nc flat hd socket cap m/galv b18.2.1 b18.3129
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QFCTXFlat Head Socket Cap ScrewSteelZinc/Clear5/16-18 x 55/16-18 x 5/8 flat s/c alloy bright zinc b18.2.1 b18.377
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Bostwick INFlat Head Socket Cap ScrewSteelPlain1-8 x 51-8 x 5 flat soc cap screw alloy b18.2.1 b18.315
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Bostwick INFlat Head Socket Cap ScrewSteelPlain5/8-11 x 55/8-11 x 5 flat soc cap screw alloy b18.2.1 b18.387
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Bostwick INFlat Head Socket Cap ScrewSteelPlain7/8-9 x 57/8-9 x 5 flat soc cap screw alloy b18.2.1 b18.37
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THRDFASTFLFlat Head Socket Cap ScrewSteelPlain5/8-11 x 5flat socket c/s b18.2.1 b18.340
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THRDFASTFLFlat Head Socket Cap ScrewSteelPlain5/8-11 x 5flat socket c/s b18.2.1 b18.34
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KBSTNFlat Head Socket Cap ScrewSteelPlain1/2 x 51/2 x 5 bolt anchor fl soc ctsk b18.2.1 b18.340
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THRDFASTALFlat Head Socket Cap ScrewSteelPlain1-8 x 5flat socket c/s b18.2.1 b18.31
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THRDFASTALFlat Head Socket Cap ScrewSteelPlain7/8-9 x 5flat socket c/s b18.2.1 b18.315
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THRDFASTMSFlat Head Socket Cap ScrewSteelPlain3/4-10 x 5flat socket c/s b18.2.1 b18.33
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All SizeTXFlat Head Socket Cap ScrewSteelPlain5/8-11 x 55/8-11 x 5 flat head socket cap b18.2.1 b18.350
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