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#2 Button Head Cap Screws (ASME B18. 3)

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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Irwin IndOntButton Head Socket Cap ScrewSteelZinc/Black#2-56 x 1/82-56 x 1/8 button socket cap steel black tri zinc 0.0002 b18.33500
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Irwin IndOntButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/42-56 x 1/4 button socket capscrew 18-8 stainless steel w/ yellow nylon patch b18.34700
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/82-56 x 1/8 btn soc cap screw s/s b18.32200
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AbabaCAButton Head Socket Cap ScrewSteelPlain#2-56 x 1/82-56 x 1/8 btn soc cap screw alloy b18.31200
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/82-56 x 1/8 6-lob btn soc s/s b18.314530
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56 x 3/16 btn soc cap screw s/s b18.3313
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AbabaCAButton Head Socket Cap ScrewSteelPlain#2-56 x 3/162-56 x 3/16 btn soc cap screw alloy b18.3100
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/42-56 x 1/4 btn soc cap screw s/s b18.310359
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AbabaCAButton Head Socket Cap ScrewSteelPlain#2-56 x 1/42-56 x 1/4 btn soc cap screw alloy b18.3200
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 5/162-56 x 5/16 btn soc cap screw s/s b18.3286
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/22-56 x 1/2 btn soc cap screw s/s b18.3113
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/42-56 x 3/4 btn soc cap screw s/s b18.3300
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AbabaCAButton Head Socket Cap Screw316, 317, A4 StainlessPlain#2-56 x 1/82-56 x 1/8 btn soc cap screw 316 s/s b18.350
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AbabaCAButton Head Socket Cap ScrewSteelPlain#2-56 x 5/162-56 x 5/16 btn soc cap screw alloy b18.3100
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ASMCILButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/8#2-56x3/8 coarse socket button hd cap screw ss18-8 b18.3400
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/82-56 x 1/8 btn soc cap screw s/s b18.3800
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AbabaCAButton Head Socket Cap ScrewSteelPlain#2-56 x 1/82-56 x 1/8 btn soc cap screw alloy b18.3600
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56 x 3/16 btn soc cap screw s/s b18.3200
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/42-56 x 1/4 btn soc cap screw s/s b18.3700
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AbabaCAButton Head Socket Cap ScrewSteelPlain#2-56 x 1/42-56 x 1/4 btn soc cap screw alloy b18.3100
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AbabaCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/42-56 x 3/4 btn soc cap screw s/s b18.3300
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EximS'poreButton Head Socket Cap ScrewSteelBlack Oxide#2-56 x 1/4screw socket button head cap hexsteel black oxide#2-56 x 1/4 in b18.3122
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EximS'poreButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated#2-56 x 1/4screw button head hexs/s passivated#2-56 x 1/4 in b18.32442
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EximS'poreButton Head Socket Cap ScrewSteelBlack Oxide#2-56 x 3/8screw socket button head hexsteel black oxide#2-56 x 3/8 in b18.3329
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EximS'poreButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated#2-56 x 3/8screw socket button head hex recesss/s passivated#2-56 x 3/8 in b18.31996
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 5/162-56x5/16 bhcs 18-8 702027 b18.31095
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/4#2-56x1/4 non-standard bhcs a2 (18- 702026 b18.3254
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/16#2-56x3/16 non-standard bhcs a2 (18 702025 b18.3370
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/2#2-56x1/2 non-standard bhcs a2 (18- 702029 b18.34950
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ParkerAZButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56 x 3/16 button head cap screw fully threaded dfar 302 s/s plain finish b18.3 made in u.s.a.50,000
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ParkerAZButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56 x 3/16 button head cap screw dfar 302 s/s b18.3 made in u.s.a.50,000
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ParkerAZButton Head Socket Cap ScrewGrade B8MPlain#2-56 x 1/42-56x1/4 button head socket cap screw-asme b18.3 .125 thread astm a193/193m (2012b) grd b8m cl 2 316l s.s. plain finish made in u.s.a.1440
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ParkerAZButton Head Socket Cap ScrewSteelPlain#2-56 x 5/162-56 x 5/16 button head cap screw 6 lobe b18.3 made in u.s.a.10,300
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ParkerAZButton Head Socket Cap ScrewGrade B8MPlain#2-56 x 1/42-56x1/4 button head socket cap screw-asme b18.3 .125 thread astm a193/193m (2012b) grd b8m cl 2 316l s.s. plain finish made in u.s.a.1440
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StandardMAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56x3/16 hex button cap screw 18-8 stainless steel b18.3inquire
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StandardMAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/82-56x1/8 hex button cap screw 18-8 stainless steel b18.359127
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StandardMAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/22-56x1/2 hex button cap screw 18-8 stainless steel b18.362183
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StandardMAButton Head Socket Cap Screw316, 317, A4 StainlessPlain#2-56 x 1/22-56x1/2 button cap screw 316 stainless steel b18.338893
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StandardMAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 5/162-56x5/16 hex button cap screw 18-8 stainless steel b18.361754
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StandardMAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/42-56x1/4 hex button cap screw 18-8 stainless steel b18.36500
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StandardMAButton Head Socket Cap Screw316, 317, A4 StainlessPlain#2-56 x 5/82-56x5/8 button cap screw 316 stainless steel b18.3-2000
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StandardMAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/82-56x3/8 hex button cap screw 18-8 stainless steel b18.3736
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QFCTXButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162/56x3/16 button hd socket cap 18-8ss b18.3100
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OSSCORIButton Head Socket Cap ScrewSteelPlain#2-56 x 3/82-56x3/8 button soc cap screw b18.342
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QFCTXButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/82-56x1/8 button soc c/s 18-8 b18.32500
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BCSBCAButton Head Socket Cap ScrewSteelPlain#2-56 x 7/162-56x 7/16 button head socket b18.315,000
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JET FITTINGCAButton Head Socket Cap ScrewSteelPlain#2-56 x 1/8cap screw button socket 2-56x1/8 alloy steel b18.390
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/8cap screw button socket 256x1/8 stainless steel b18.3800
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 3/162-56x3/16 button hex socket cap screw stainless steel 18-8 b18.3350
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/4cap screw button socket 256x1/4 stainless steel b18.3676
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide#2-56 x 1/4cap screw button socket 256x1/4 stainless steel black oxide b18.3855
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JET FITTINGCAButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/2cap screw button socket 256x1/2 stainless steel b18.34898
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THRDFASTFLButton Head Socket Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#2-56 x 1/218-8 ss button soc c/s b18.3174
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