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5/16 inch length Flat Head Cap Screws (ASME B18. 2.1)

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 
GLFOHFlat Head Socket Cap ScrewSteelPlain#4-40 x 5/16#4-40x5/16 flat stl pln b18.2.1 b18.3 () () ()1279
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Irwin IndOntFlat Head Socket Cap ScrewSteelZinc/Black#4-40 x 5/164-40 x 5/16 flat soc c/s stl .0002 min zinc trivalent black b18.2.1 b18.32200
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Irwin IndOntFlat Head Socket Cap ScrewSteelZinc/Black#6-32 x 5/166-32 x 5/16 flat steel soc cap .0002 min zinc trivalent black b18.2.1 b18.39525
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AbabaCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/1610-32 x 5/16 flat soc cap screw s/s b18.2.1 b18.33484
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AbabaCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/164-40 x 5/16 flat soc cap screw s/s b18.2.1 b18.3978
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AbabaCAFlat Head Socket Cap ScrewSteelPlain#4-40 x 5/164-40 x 5/16 flat soc cap screw alloy b18.2.1 b18.32100
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AbabaCAFlat Head Socket Cap ScrewSteelPlain#8-32 x 5/168-32 x 5/16 flat soc cap screw alloy b18.2.1 b18.3300
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AbabaCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 5/1610-24 x 5/16 flt soc cap s/s b18.2.1 b18.3100
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AbabaCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 5/162-56 x 5/16 flat socket head cap screw stainless steel b18.2.1 b18.3500
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ASMCILFlat Head Socket Cap ScrewSteelPlain#2-56 x 5/16(ft) coarse socket flat hd c/s b18.2.1 b18.3500
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ASMCILFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/16fine socket flat hd c/s ss18-8 b18.2.1 b18.31,025
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AbabaCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/164-40 x 5/16 flat soc cap screw s/s b18.2.1 b18.3500
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AbabaCAFlat Head Socket Cap ScrewSteelPlain#4-40 x 5/164-40 x 5/16 flat soc cap screw alloy b18.2.1 b18.3600
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JET FITTINGCAFlat Head Socket Cap ScrewSteelPlain#6-32 x 5/16#6-32x5/16 non-standard flat hdsock ca 712078 b18.2.1 b18.360
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JET FITTINGCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 5/166-32x5/16 flat 18-8 6-32 X 5/16 FHCS 18-8 b18.2.1 b18.31500
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JET FITTINGCAFlat Head Socket Cap ScrewSteelPlain#8-32 x 5/16#8-32x5/16 non-standard flat hdsock ca 712096 b18.2.1 b18.3176
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StandardMAFlat Head Socket Cap Screw316, 317, A4 StainlessPlain#2-56 x 5/162-56x5/16 flat head socket cap screw 316 stainless steel b18.2.1 b18.371548
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StandardMAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 5/162-56x5/16 flat head socket cap screw 18-8 stainless steel b18.2.1 b18.373600
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StandardMAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 5/164-40x5/16 flat head socket cap screw 18-8 stainless steel b18.2.1 b18.338800
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B & K FASTPAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 5/1610/24 x 5/16 flat socket cap screws 18-8 ss b18.2.1 b18.321
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OSSCORIFlat Head Socket Cap ScrewSteelPlain#8-32 x 5/168-32x5/16 flat soc cap screw b18.2.1 b18.3297
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OSSCORIFlat Head Socket Cap ScrewSteelPlain#4-40 x 5/164-40x5/16 flat soc cap screw b18.2.1 b18.31,900
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OSSCORIFlat Head Socket Cap ScrewSteelPlain#6-32 x 5/166-32x5/16 flat soc cap screw b18.2.1 b18.3100
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OSSCORIFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 5/166-32x5/16 flat soc cap screw 18-8 304 b18.2.1 b18.312,992
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Mid-ValleyCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/16flat head socket cap screw b18.2.1 b18.3inquire
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BCSBCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 5/1610-32x 5/16 flat head socket stainless steel b18.2.1 b18.314,000
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JET FITTINGCAFlat Head Socket Cap ScrewSteelPlain#6-32 x 5/16cap screw flat socket 632x5/16 alloy steel b18.2.1 b18.395
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JET FITTINGCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 5/16cap screw flat socket 632x5/16 stainless steel b18.2.1 b18.3100
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JET FITTINGCAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 5/16cap screw flat socket 832x5/16 stainless steel b18.2.1 b18.3100
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JET FITTINGCAFlat Head Socket Cap ScrewSteelPlain#10-32 x 5/16cap screw flat socket 1032x5/16 alloy steel b18.2.1 b18.3550
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JET FITTINGCAFlat Head Socket Cap ScrewSteelPlain#4-40 x 5/16cap screw flat socket 440x5/16 alloy steel b18.2.1 b18.32955
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THRDFASTALFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 5/1618-8 ss flat socket c/sr b18.2.1 b18.3100
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All SizeTXFlat Head Socket Cap ScrewSteelPlain#8-32 x 5/168-32 x 5/16 flat head socket cap b18.2.1 b18.3193
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