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3/4 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 NutSteelGalvanized3/4-10 x 2 1/43/4-10x2-1/4 hex coupling nut stl hdg b18.2.2 () () ()25
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GLFOHCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 23/4-10x2 hex coupling nut 18-8 s/s b18.2.2 () () ()21
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GLFOHCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 2 1/43/4-10x2-1/4 hex coupling nut 18-8 s/s b18.2.2 () () ()1
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GLFOHCoupling NutSteelZinc/Clear3/4-10 x 2 1/43/4-10x2-1/4 hex coupling nut stl zc b18.2.2 () () ()106
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AbabaCACoupling NutSteelPlain3/4-10 x 1 1 1/43/4-10 x 1 1/2 cplng nut 1 1/4 af stl pln b18.2.2296
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AbabaCACoupling NutSteelGalvanized3/4-10 x 2 1/43/4-10 x 2 1/4 cplng nut stl hdg b18.2.260
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AbabaCACoupling NutSteelPlain3/4-10 x 2 1/43/4-10 x 2 1/4 cplng nut stl pln b18.2.26
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AbabaCACoupling NutSteelZinc/Clear3/4-10 x 2 1/43/4-10 x 2 1/4 cplng nut stl znc b18.2.228
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AbabaCACoupling NutSteelZinc/Clear3/4-16 x 2 1/43/4-16 x 2 1/4 cplng nut 1 af stl znc b18.2.210
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SIIINCoupling NutSteelZinc/Clear3/4-103/4-10 zinc rod coupling) b18.2.2145
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JET FITTINGCACoupling NutAluminumPlain3/4-16 x 1 1/4 x 13/4-16x1-1/4x1 nut coupling hex aluminum 1216F20-16CN A b18.2.24
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StandardMACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-103/4-10 coupling nut 18-8 stainless steel b18.2.2117
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StandardMACoupling NutSteelGalvanized3/4-103/4-10 coupling nut galvanized b18.2.261
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QFCTXCoupling NutSteelZinc/Clear3/43/4nc bzp coupling nut 1x2 1/4l b18.2.2293
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QFCTXCoupling NutSteelZinc/Clear3/43/4nc bzp coupling nut 1x2 1/4l b18.2.226
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B & K FASTPACoupling NutSteelPlain3/4-10 x 2 1/43/4-10 x 2 1/4 long coupling nuts plain b18.2.21
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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 2 1/43/4-10 x 2 1/4 stainless coupling nuts b18.2.215
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B & K FASTPACoupling NutSteelZinc/Clear3/4-10 x 2 1/43/4-10 x 2 1/4 long coupling nuts zinc b18.2.2416
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B & K FASTPACoupling NutSteelGalvanized3/4-10 x 2 1/43/4-10 x 2 1/4 galv hex coupling nut b18.2.2132
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B & K FASTPACoupling NutSteelBlack Oxide3/4-10 x 1 7/83/4-10 x 1 7/8 heavy hex coupling nuts black heat treated b18.2.28
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B & K FASTPACoupling NutSteelBlack Oxide3/4-10 x 2 1/83/4-10 x 2 1/8 heavy hex coupling nuts black domestic with certs b18.2.232
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B & K FASTPACoupling NutSteelPlain3/4-10 x 2 1/43/4-10 x 2 1/4 heavy hex coupling nut plain b18.2.24
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BHAMGACoupling NutSteelPlain3/4-103/4-10 super duplex 70-30 heavy couplng nuts b18.2.225
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Marine FastenersFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 2 1/43/4-10x2-1/4 hex coupling nut 18-8 ss b18.2.2266
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Bostwick INCoupling NutSteelZinc/Clear3/4-10 x 1 3/43/4-10 x 1 3/4 reducing coup nut 7/8-9 zinc b18.2.214
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JET FITTINGCACoupling NutAluminumPlain3/4-20 x 1 1/4 x 1nut coupling 3/4-20x1-1/4x1 hex aluminum b18.2.24
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THRDFASTFLCoupling NutGrade 2HGalvanized3/4-10h coupling nut hdg b18.2.210
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THRDFASTALCoupling NutSteelPlain3/4-10coupling nut b18.2.2124
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KBSTNCoupling NutSteelPlain3/4-10 x 2 1/43/4-10 x 2 1/4 hvy coupling nut b18.2.222
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THRDFASTALCoupling NutSteelGalvanized3/4-10 x 2 1/4coupling nut hdg b18.2.25400
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THRDFASTALCoupling Nut316, 317, A4 StainlessPlain3/4-10 x 2t-316 ss coupling nut b18.2.24
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THRDFASTMSCoupling NutSteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)3/4-10 x 2 1/4coupling nut teflon blue b18.2.26
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WSBKYCoupling NutGrade 2Zinc/Clear3/4-10 x 2 1/4nut hex coupling gr2 (zt) 3/4-10x2 1/4 1 b18.2.2924
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