1/2-20 Button Head Cap Screws

Button Head Socket Cap Screws are commonly used in machine parts, die fixturing, and clamping. The socket head enables driving where there is not sufficient space for wrenches or sockets. The button shaped head offer a wider bearing surface. Button head socket cap screws have a high tensile strength but are still low profile. They are covered by ASME B18.3

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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MidStatesMIButton Head Socket Cap ScrewSteelPlain1/2-20 x 3/8button soc c/s35
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OlanderCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1/21/2-20 x 1/2 but soc alloy21
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OlanderCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1/21/2-20 x 1/2 but soc sst rohs3
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MidStatesMIButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 3/41/2-20 x 3/4 button soc c/s 18-8600
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GLFOHButton Head Socket Cap ScrewSteelPlain1/2-20 x 3/4bhcs screw40
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OlanderCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 3/41/2-20 x 3/4 but soc sst150
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AbabaCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 11/2-20 x 1 btn soc cap screw alloy b18.394
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AbabaCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 11/2-20 x 1 btn soc cap screw alloy b18.321
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YANKEENHButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/2-20 x 1 but hd sckt screw stnls stl17
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ACCURATEILButton Head Socket Cap ScrewSteelPlain1/2-20 x 1fine button socket c/s (alloy)80
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OlanderCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/2-20 x 1 but soc cap sst125
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Future FastenerTXButton Head Socket Cap ScrewSteelBlack Oxide1/2-20 x 11/2-20 x 1 nf button socket cap scr blk10
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LippinCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1socket cap screw buttonhead fine plainstock
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All SizeTXButton Head Socket Cap ScrewSteelPlain1/2-20 x 11/2-20 x 1 button head socket cap b18.3217
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FasSpcMfgFLButton Head Socket Cap ScrewSteelPlain1/2-20 x 1button socket cap2,700
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 1(ft) fine socket button hd c/s250
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HBBOLTCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1bh socket c/s96
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OlanderCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 11/2-20 x 1 but soc alloy23
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Bolts PlusOntButton Head Socket Cap ScrewSteelPlain1/2-20 x 1button socket c/s126
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BRIGHBESTILButton Head Socket Cap ScrewSteelZinc/Clear1/2-20 x 11/2-20 x 1 button socket hardened bake6000
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Alma BoltMIButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1st. st. button socket c/s300
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/41/2-20 x 1 1/4 btn soc cap screw s/s b18.3125
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B & K FASTPAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/41/2-20 x 1 1/4 button hd socket cap screws b18.3100
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CenturyFLButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/41/2-20 x 1.25 button socket cap screw2100
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MidStatesMIButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/4button soc c/s 18-88
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/4(ft) fine socket button hd c/s200
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WMTSMIButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/41/2-20 x 1 1/4 bhscs b18.365
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BRIGHBESTILButton Head Socket Cap ScrewSteelZinc/Clear1/2-20 x 1 1/41/2-20 x 1 1/4 button socket hardened bake4500
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WeaverWAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/4button hd socket c/s41
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AbabaCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/21/2-20 x 1 1/2 btn soc cap screw alloy b18.380
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YANKEENHButton Head Socket Cap ScrewSteelBlack Oxide1/2-20 x 1 1/21/2-20 x 1 1/2 but hd sckt screw alloy blk oxide50
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StandardMAButton Head Socket Cap Screw316, 317, A4 StainlessPlain1/2-20 x 1 1/21/2-20x1-1/2 button cap screw 316 stainless steel b18.3inquire
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/2(ft) fine socket button hd c/s100
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HBBOLTCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/2bh soc c/sr19
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OlanderCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/21/2-20 x 1 1/2 but soc alloy22
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OlanderCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/21/2-20 x 1 1/2 but soc sst rohs150
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WDMBIAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 1/2button soc c/sr100
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AbabaCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 3/41/2-20 x 1 3/4 btn soc cap screw alloy b18.320
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AbabaCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 3/41/2-20 x 1 3/4 button socket head cap screw alloy b18.320
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 3/4(ft) fine socket button hd c/s130
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OlanderCAButton Head Socket Cap ScrewSteelPlain1/2-20 x 1 3/41/2-20 x 1 3/4 but soc alloy63
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OlanderCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 3/41/2-20 x 1 3/4 but soc sst rohs50
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 2(ft) fine socket button hd c/s75
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SOLUTIONOHButton Head Socket Cap ScrewSteelZinc/Yellow1/2-20 x 21/2-20x2 alloy button socket astm f835/asme b18.3 (ft) rohs/zinc/bake (trivalent) (fine thread) material restriction -yfs material only235
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WDMBIAButton Head Socket Cap ScrewSteelPlain1/2-20 x 2button soc c/sr50
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OlanderCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 21/2-20 x 2 but soc cap sst50
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Bolts PlusOntButton Head Socket Cap ScrewSteelPlain1/2-20 x 2 1/2button soc cap8
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BHAMALButton Head Socket Cap ScrewSteelPlain1/2-20 x 2 1/2button soc c/s150
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 2 1/2(ft) fine socket button hd c/s15
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Bolts PlusOntButton Head Socket Cap ScrewSteelPlain1/2-20 x 2 1/2button socket c/s6
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WMTSMIButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 2 1/21/2-20 x 2 1/2 bhscs 18-8 b18.34
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WeaverWAButton Head Socket Cap ScrewSteelPlain1/2-20 x 2 1/2button hd socket c/s55
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FasSpcMfgFLButton Head Socket Cap ScrewSteelPlain1/2-20 x 3button socket cap68
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ASMCILButton Head Socket Cap ScrewSteelPlain1/2-20 x 3(ft) fine socket button hd c/s150
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HOUSEFLButton Head Socket Cap ScrewSteelPlain1/2-20 x 3 1/2soc button head200
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