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5/16 Hex Coupling Nuts (ASME B18. 2.2)

Coupling Nuts, also known as Extension Nuts, are threaded fastener for joining two male threaded objects, most commonly threaded rod, but also pipes. The outside of the coupling nut is usually a hex so it can be gripped by a wrench.

25 results, (click on any line for more information)
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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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GLFOHCoupling NutSteelZinc/Clear5/16-18 x 1 3/4 x 1/25/16-18x1-3/4x1/2 waf hex coupling nut stl zc b18.2.2 () () ()202
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GLFOHCoupling NutSteelZinc/Clear5/16-18 x 1 3/4 x 5/85/16-18x1-3/4x5/8 waf hex coupling nut stl zc b18.2.2 () () ()96
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 7/165/16-18 x 1 cplng nut 7/16 af s/s b18.2.281
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AbabaCACoupling NutSteelZinc/Clear5/16-18 x 1 1/25/16-18 x 1 1/8 cplng nut 1/2 af stl znc b18.2.2520
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 7/85/16-18 x 7/8 cplng nut s/s b18.2.24
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AbabaCACoupling NutSteelZinc/Clear5/16-18 x 7/8 7/165/16-18 x 7/8 cplng nut 7/16 af stl znc b18.2.2900
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ASMCILCoupling NutGrade AGalvanized5/16-18 x 1/25/16-18xw1/2xl1 3/4 coarse a563 gra hex rod coupling nut low carb hdg b18.2.2159
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 7/165/16-18 x 1 cplng nut 7/16 af s/s b18.2.220
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AbabaCACoupling NutSteelZinc/Clear5/16-18 x 1 1/25/16-18 x 1 1/8 cplng nut 1/2 af stl znc b18.2.2100
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AbabaCACoupling NutSteelZinc/Clear5/16-18 x 1 3/45/16-18 x 1 3/4 cplng nut stl znc b18.2.2150
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AbabaCACoupling NutSteelZinc/Clear5/16-24 x 7/8 7/165/16-24 x 7/8 cplng nut 7/16 af stl znc b18.2.250
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AbabaCACoupling NutSteelZinc/Clear5/16-24 x 7/8 7/165/16-24 x 7/8 cplng nut 7/16 af stl znc b18.2.225
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SIIINCoupling NutSteelZinc/Clear5/16-18 x 7/8 x 7/165/16-18 x l7/8 x w7/16 coupling nut zinc plated) b18.2.21339
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SIIINCoupling NutSteelZinc/Clear5/16-18 x 1 3/4 x 7/165/16-18 x l1-3/4 x w7/16 coupling nut zinc plated) b18.2.2250
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JET FITTINGCACoupling NutSteelZinc/Clear5/16-18 x 7/85/16-18x7/8 coupling nut zinc CN-.31C.87-Z b18.2.2193
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StandardMACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 coupling nut 18-8 stainless steel b18.2.22950
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B & K FASTPACoupling NutSteelZinc/Clear5/16-18 x 7/85/16-18 x 7/8 short coupling nuts zinc b18.2.210
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B & K FASTPACoupling NutSteelZinc/Clear5/16-18 x 1 1/85/16-18 x 1 1/8 hex coupling nuts zinc b18.2.2451
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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 15/16-18 x 1 stainless coupling nuts b18.2.229
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QFCTXCoupling NutSteelZinc/Clear5/16-18 1/2 x 1 3/45/16-18 long coupling nut 1/2x1 3/4l zinc b18.2.2150
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QFCTXCoupling NutSteelZinc/Clear5/16-18 x 7/85/16-18 x 7/8 hex coupling nut zinc b18.2.21000
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THRDFASTFLCoupling NutSteelZinc/Clear5/16-18 x 1 3/4coupling nut b18.2.245
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THRDFASTFLCoupling NutSteelZinc/Clear5/16-18coupling nut b18.2.225
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All SizeTXCoupling NutSteelPlain5/16-18 x 7/85/16-18 x 7/8 short coupling nut b18.2.216
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All SizeTXCoupling NutSteelPlain5/16-18 x 1 3/45/16-18 x 1-3/4 coupling nut heavy b18.2.286
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