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#1 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 
ASMCILFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1-72 x 1/2#1-72x1/2 fine socket flat hd cap screw ss18-8 b18.2.1 b18.375
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ASMCILFlat Head Socket Cap ScrewSteelPlain#1-72 x 1(pt) fine socket flat hd c/s b18.2.1 b18.35
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ASMCILFlat Head Socket Cap ScrewSteelPlain#1-64 x 1/4#1-64x1/4 (ft) unc socket flat hd cap screw alloy pln b18.2.1 b18.375
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ASMCILFlat Head Socket Cap ScrewSteelPlain#1-72 x 1/8(ft) fine socket flat hd c/s b18.3750
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ASMCILFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1-72 x 3/4#1-72x3/4 fine socket flat hd cap screw ss18-8 b18.2.1 b18.3825
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JET FITTINGCAFlat Head Socket Cap ScrewSteelBlack Oxide#1-72 x 3/16#1-72x3/16 flat hdsock caps stl blk ox 211006 b18.2.1 b18.398
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StandardMAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1-64 x 3/161-64x3/16 flat head socket cap screw 18-8 stainless steel b18.2.1 b18.322550
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StandardMAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1-64 x 3/81-64x3/8 flat head socket cap screw 18-8 stainless steel b18.2.1 b18.329300
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StandardMAFlat Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#1-64 x 1/41-64x1/4 flat head socket cap screw 18-8 stainless steel b18.2.1 b18.325600
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All SizeTXFlat Head Socket Cap ScrewSteelPlain#1-72 x 1/81-72 x 1/8 flat head socket cap b18.2.1 b18.3195
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