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5/8 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.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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GLFOHCoupling NutSteelPlain5/8-11 x 2 13/165/8-11x2-1/8 hex coupling nut 13/16 af stl pln b18.2.2 () () ()42
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BHAMALCoupling NutSteelZinc/Clear5/8-11 x 3/85/8-11x3/8 reducer coupling nut zn b18.2.21043
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 1 3/45/8-11 x 1 3/4 cplng nut s/s b18.2.219
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AbabaCACoupling NutSteelGalvanized5/8-11 x 2 1/85/8-11 x 2 1/8 cplng nut stl hdg b18.2.271
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AbabaCACoupling NutSteelZinc/Clear5/8-11 x 2 1/85/8-11 x 2 1/8 cplng nut stl znc b18.2.2324
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AbabaCACoupling NutSteelPlain5/8-11 x 2 1/85/8-11 x 2 1/8 cplng nut stl pln b18.2.26
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AbabaCACoupling NutSteelZinc/Clear5/8-11 x 3/45/8-11 x 3/4 redc cplng nut stl znc b18.2.225
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AbabaCACoupling NutSteelZinc/Clear5/8-18 x 2 13/165/8-18 x 2 1/8 cplng nut 13/16 af stl znc b18.2.223
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SIIINCoupling NutSteelZinc/Clear5/8-115/8-11 zinc rod coupling) b18.2.2175
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StandardMACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-115/8-11 coupling nut 18-8 stainless steel b18.2.21000
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StandardMACoupling NutSteelGalvanized5/8-115/8-11 coupling nut galvanized b18.2.2-790
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QFCTXCoupling NutSteelZinc/Clear5/8-11 13/16 x 2 1/85/8-11 coupling nut zinc 13/16x2 1/8l b18.2.2117
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QFCTXCoupling NutSteelZinc/Clear5/8-11 13/16 x 2 1/85/8-11 coupling nut zinc 13/16x2 1/8l b18.2.266
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QFCTXCoupling NutSteelGalvanized5/8 x 2 1/85/8x2 1/8 hdg rod coupler nut b18.2.2192
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B & K FASTPACoupling NutSteelZinc/Clear5/8-18 x 2 1/85/8-18 x 2 1/8 long coupling nuts zinc b18.2.24
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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 1 3/45/8-11 x 1 3/4 stainless coupling nuts b18.2.26
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B & K FASTPACoupling NutSteelPlain5/8-11 x 2 1/85/8-11 x 2 1/8 long coupling nuts plain b18.2.2180
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B & K FASTPACoupling NutSteelZinc/Clear5/8-11 x 2 1/85/8-11 x 2 1/8 long coupling nuts zinc b18.2.2229
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B & K FASTPACoupling NutSteelGalvanized5/8-11 x 2 1/85/8-11 x 2 1/8 galv hex coupling nut b18.2.2114
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B & K FASTPACoupling NutSteelBlack Oxide5/8-11 x 1 5/85/8-11 x 1 5/8 heavy hex coupling nuts black heat treated b18.2.2230
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KBSTNCoupling NutSteelPlain5/8-11 x 2 1/85/8-11 x 2 1/8 hvy coupling nut b18.2.27
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OSSCORICoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 1 3/45/8-11x1 3/4 coupling nut 18-8 304 b18.2.24
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QFCTXCoupling NutSteelZinc/Clear5/8-115/8-11 coupling nut zinc w/witness hole b18.2.2200
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QFCTXCoupling NutSteelPlain5/8-11 13/16 x 2 1/85/8-11 hex coupling nut plain 13/16x2 1/8 b18.2.2180
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THRDFASTFLCoupling NutSteelPlain5/8-11coupling nut b18.2.2198
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THRDFASTFLCoupling NutSteelZinc/Clear5/8-11reducing coupling nut 1/2-13 b18.2.2267
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THRDFASTFLCoupling NutSteelZinc/Clear5/8nf-18 coupling nut b18.2.218
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THRDFASTFLCoupling NutSteelPlain5/8-11coupling nut b18.2.2107
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THRDFASTALCoupling NutSteelPlain5/8-11coupling nut b18.2.211
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KBSTNCoupling NutSteelPlain5/8-18 x 1 7/85/8-18 x 1 7/8 hvy coupling nut 15/16 hex b18.2.2467
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KBSTNCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 2 1/85/8-11 x 2 1/8 coupling nut 13/16hex s/s b18.2.280
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THRDFASTALCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 1 3/418-8 ss coupling nut b18.2.2177
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THRDFASTALCoupling Nut316, 317, A4 StainlessPlain5/8-11 x .16mmx1 1/2 t-316l coupling nut b18.2.229
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THRDFASTOKCoupling NutSteelZinc/Clear5/8-11coupling nut b18.2.225
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WSBKYCoupling NutGrade 2Plain5/8-11 x 2 13/16nut hex coupling gr2 (pl) 5/8-11x2 1/8 13/16 b18.2.21,165
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