1 Hex Coupling Nuts

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 
AmericanNYCoupling NutSteelZinc/Clear1-8 (2-3/4x1-3/8) coupling nut pl44
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AmericanNYCoupling Nut316, 317, A4 StainlessPlain1-8rod coupler nut 316 stainless1
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AmericanNYCoupling NutSteelGalvanized1 x 3coupling nut hot dipped2
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AmericanNYCoupling NutSteelGalvanized1 x 3coupling nut hdg2
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TSFTXCoupling NutSteelZinc/Clear1-8 x 2 3/4 x 1hex coupling nut steel zinc plated 1 -8 x 2 3/4 x 1 3/8 af21
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B & K FASTPACoupling NutSteelZinc/Clear1-8 x 2 1/21-8 x 2 1/2 coupling nuts zinc b18.2.212
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B & K FASTPACoupling NutSteelZinc/Clear1-8 x 2 3/41-8 x 2 3/4 long coupling nuts zinc b18.2.27
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B & K FASTPACoupling NutSteelPlain1-14 x 2 3/41-14 x 2 3/4 hex coupling nuts pln b18.2.29
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YANKEENHCoupling NutSteelZinc/Clear1-81-8 (2-3/4 long) coupling nut steel zinc plated10
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YANKEENHCoupling NutSteelZinc/Clear1-14coupling nut10
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ACFCACoupling NutSteelZinc/Clear1-8 x 2 3/41-8x2-3/4 rod coupling nut z/p rohs1
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BHAMALCoupling NutGrade 2HPlain1-8 x 2 3/41-8 x 2 3/4 coup nut a194-2h plain b18.2.21
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VertexDILCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 1 1/4 x 2 1/21-8 coupling nut 1-1/4x2-1/2 18.8 ss1004
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METRO INDOHCoupling NutSteelZinc/Clear1-8coupling nut uss21
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METRO INDOHCoupling NutSteelPlain1-8 x 1 1 5/81-8x1 1/2 coupling nut 1 5/8 waf5
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NutsBoltsNECoupling NutSteelZinc/Clear1-81-8 coupling nut zp80
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AmericanNYCoupling NutSteelZinc/Clear1-8 (2-3/4x1-3/8) coupling nut pl44
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AmericanNYCoupling NutSteelGalvanized1 x 3coupling nut hot dipped2
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AmericanNYCoupling NutSteelGalvanized1 x 31 x 3 coupling nut hdg2
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ZAL INDUSCACoupling NutSteelZinc/Clear1-8 x 2 1/21-8 x 2 1/2 coupling nut pltd4
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ACCURATEILCoupling NutSteelZinc/Clear11 1/4-7 hex coupling nut (1-5/8 widex3 long)4
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ACCURATEILCoupling NutSteelZinc/Clear1-8 x 2 1/2hex coupling nut7
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Big RedOKCoupling NutGrade 8Plain1-8 x 2 3/41-8 x 2-3/4 long nc gr.8 hardened hex coupling nut (1-1/2 hex)-plain finish (black)50
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EmpireWACoupling NutSteelPlain1-8 x 2 1/21-8 x 2-1/2 rod coupling nut73
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EmpireWACoupling NutSteelPlain1-8 x 2 1/21-8 x 2-1/2 rod coupling nut300
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ASMCILCoupling NutGrade AZinc/Clear1-8 x 1 1/41-8xw1 1/4xl2 1/2 coarse a563 gra hex rod coupling nut low carb zp unc5
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 2 1 3/81-8 x 2 3/4 cplng nut 1 3/8 af s/s b18.2.24
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AbabaCACoupling NutSteelPlain1-8 x 2 1 3/81-8 x 2 3/4 cplng nut 1 3/8 af stl pln b18.2.22
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AbabaCACoupling NutSteelZinc/Clear1-8 x 2 1 3/81-8 x 2 3/4 cplng nut 1 3/8 af stl znc b18.2.210
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AbabaCACoupling NutSteelZinc/Clear1-8 x 2 1 3/81-8 x 2 3/4 cplng nut 1 3/8 af stl znc b18.2.25
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LippinCACoupling NutGrade 5Plain1-8 x 3/41-8 x 3/4-10 reducer coupling nut grade 5 with witness holes plain10
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LippinCACoupling NutGrade 5Plain1-8 x 7/81-8 x 7/8-9 reducer coupling nut grade 5 with witness holes plain10
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LippinCACoupling NutSteelZinc/Clear1-8 x 3/4reducer coupling nut zinc plated100
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LippinCACoupling NutSteelZinc/Clear1-8 x 7/8reducer coupling nut zinc plated30
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LippinCACoupling NutSteelPlain1-8 x 5/8reducer coupling nut plain151
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LippinCACoupling NutSteelZinc/Clear1-8coupling nut w/ sight-hole zinc plated1350
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LippinCACoupling NutSteelZinc/Clear1-8 x 2 3/4coupling nut zinc plated1000
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LippinCACoupling NutSteelPlain1-8coupling nut plain842
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LippinCACoupling NutSteelGalvanized1-8coupling nut hot dipped galvanized1700
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LippinCACoupling NutSteelGalvanized1-8coupling nut w/ sight-hole hot dipped galvanized1685
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JacksonMSCoupling NutGrade 2HPlain1-8 1 5/81-8 nc 2h coupling nut 1 5/8 wafx2 3/4 oal3
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JacksonMSCoupling NutSteelZinc/Clear1-8 x 1 1/4 x 2 1/2oal nc coupling nut95
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JacksonMSCoupling NutSteelZinc/Clear1-14 x 1 3/8wafx2 3/4 oal nf coupling nut4
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 2 1/21-8 x 2 1/2 cplng nut 1 3/8 a.f. s/s b18.2.23
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SIIINCoupling NutSteelZinc/Clear1-81-8 zinc rod coupling) b18.2.250
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Future FastenerTXCoupling NutSteelZinc/Clear1-81-8 coupling nut plt25
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JacksonMSCoupling NutSteelGalvanized1-8nc coupling nut hdg 1 1/4wafx2 1/2 oal2
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JacksonMSCoupling NutGrade 2HGalvanized1-8nc 2h coupling nut hdg 1 5/8 wafx2 3/4 oal122
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JacksonMSCoupling NutSteelPlain11 nc coupling nut finish317
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LippinCACoupling NutSteelZinc/Clear1-8 x 2 3/41-8 x 2 3/4 coup nut zn (75)150
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LippinCACoupling NutSteelPlain1-81-8 coup nut plain (50)642
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FastWareSaskCoupling NutGrade 2Plain1-14 x 1 3/8afx2 3/4 uns coupling nut1,081
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FastWareSaskCoupling NutGrade 2Zinc/Clear1-8 x 1 3/8afx2 3/4 nc coupling nut10
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FastWareSaskCoupling NutGrade 2Plain1-8 x 1 3/8afx2 3/4 nc coupling nut20
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QFCTXCoupling NutSteelGalvanized1-81-8 hvy hex coup nut hdg regular b18.2.273
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EBN IndusINCoupling NutSteelPlain1-8 x 2 1/21-8 x 2 1/2 coupling nut plain finish b18.2.2240
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CertifiedILCoupling NutSteelPlain1-8 x 2 1/21-8 x 2-1/2 hex coupling nut-zps. b18.2.265
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RCFastAZCoupling NutGrade AZinc/Clear11 hex coupling nut a563 gra cr+3 (1 3/8x2 3/4 regular)inquire
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RCFastAZCoupling NutGrade AZinc/Clear11 hex coupling nut a563 gra cr+3 (1 1/4x2 1/2 economy)inquire
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RCFastAZCoupling NutGrade AZinc/Clear1-14hex coupling nut a563 gra cr+3 (1 3/8x2 3/4 regular)inquire
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RCFastAZCoupling NutGrade APlain11 hex coupling nut a563 gra (1 1/4x2 1/2)inquire
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RCFastAZCoupling NutSteelGalvanized11 hex coupling nut a563 hdg (1 3/8x2 3/4)inquire
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RCFastAZCoupling NutSteelGalvanized11 hex coupling nut a563 hdg (1 1/4x2 1/2)inquire
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BHAMALCoupling NutSteelPlain1-8 x 2 1/2coupling nut30
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ASFCORPMICoupling NutGrade 2Zinc/Clear1-8 x 2 1/21-8 x 2 1/2 hex coupling nut sae j995 gr 2 tri zn fe/zn 5an pkg6
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HBBOLTCACoupling NutSteelGalvanized1-8coupling nut h.d.g.36
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HBBOLTCACoupling NutSteelZinc/Clear1-8 x 2 1/2hex coupling nut37
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HBBOLTCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8hex coupling nut 18-8 30418
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OBRIENOHCoupling NutSteelZinc/Clear1-8 x 2 1/2hex coupling nut69
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OBRIENOHCoupling NutSteelPlain1-8 2 1/2 1 1/41-8 hex coupling nut 2 1/2 length 1 1/4 width200
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MidStatesMICoupling NutSteelZinc/Clear1 x 1/21inx1/2 reducer coupling nut znc4
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MidStatesMICoupling NutSteelPlain1-8coupling nut lh thrd4
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MidStatesMICoupling NutSteelPlain1-8 x 2 1/2coupling nut50
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THRDFASTFLCoupling Nut316, 317, A4 StainlessPlain1-8t-316 ss coupling nut b18.2.29
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THRDFASTFLCoupling NutSteelPlain1-8coupling nut b18.2.21
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THRDFASTALCoupling NutGrade 2HPlain1-8 x 2 3/4h coupling nut b18.2.220
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KBSTNCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-14 x 31-14 x 3 coupling nut s/s b18.2.299
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THRDFASTALCoupling NutSteelZinc/Clear1-8 x 2 1/2coupling nut b18.2.243
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THRDFASTOKCoupling NutSteelPlain1-8coupling nut b18.2.225
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THRDFASTOKCoupling NutSteelZinc/Clear1-8 2 1/21-8 coupling nut length 2 1/2 b18.2.25
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THRDFASTALCoupling NutGrade 5Galvanized1-8 x 2 3/4coupling nut hdg b18.2.22
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THRDFASTALCoupling NutGrade AGalvanized1-8 x 3a563 gr a hex coupling nut hdg domestic b18.2.240
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LibertyILCoupling NutSteelZinc/Clear1-8rod coupling nut plate plate10
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LibertyILCoupling NutSteelPlain1-8rod coupler5
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ISSCOMOCoupling NutGrade 2Zinc/Clear1-14 x 2 1/2nut hex coupling z/p85
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HewesNYCoupling NutGrade 2Plain1-8 x 2 3/4coupling nut1-3/8 hex gr270
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XL ScrewGACoupling NutSteelZinc/Clear1-8 x 1 3/8 x 2 3/4hex coupling nuts dc-dc zp60
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RevcarVACoupling NutSteelGalvanized1-8 x 2 3/4coupling nut 1-1/2 ac flats hdg tapped oversize .02036
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MasFasCorpNVCoupling NutSteelPlain1-8 x 6round coupling nut per dwg #imban730inquire
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GLFOHCoupling NutSteelPlain1-8 x 2 1/2hex coupling nut 153687 nut63
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GLFOHCoupling NutSteelGalvanized1-8 x 2 1/2hex coupling nut hdg nut29
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GLFOHCoupling NutSteelZinc/Clear1-8 x 2 1/2hex coupling nut zc nut108
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Kanebridge ILCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 2 1/21-8x2 1/2 hex rod coupling nut 1 1/4 inch across flats 18-8 stainless steel0.500
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Kanebridge ILCoupling NutSteelZinc/Clear1-8 x 2 3/41-8x2 3/4 hex rod coupling nut 1 3/8 inch across flats zinc0.500
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Kanebridge ILCoupling NutGrade 5Zinc/Clear1-8 x 2 3/41-8x2 3/4 hex rod coupling nut 1 3/8 inch across flats grade 5 zinc1,000
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Valley NuWACoupling NutSteelPlain1-8 x 2 3/4 x 13/8 nc hex coupling nut pl50
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Valley NuWACoupling NutGrade DHGalvanized1-8 x 6 x 1 5/8a563 dh hvy hex coupling nut hdg usa4
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Valley NuWACoupling NutSteelZinc/Black1-14nf hex cplng economy nut zb29
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Valley NuWACoupling NutSteelZinc/Black1-8 x 2 3/4 x 13/8 nc hex coupling nut zb63
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Valley NuWACoupling NutGrade DHGalvanized1-8 x 3 x 1 5/8a563 grdh hvy hex coupling nut hdg usa73
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Valley NuWACoupling NutGrade DHPlain1-8 x 3 x 1 5/8a563 grdh hvy hex coupling nut usa1
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Valley NuWACoupling NutSteelPlain1-8 x 1/2nc hex reducing coupling nut pl1
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Valley NuWACoupling NutSteelGalvanized1-8 x 2 3/4 x 13/8 nc hex coupling nut hdg55
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TimberlineCOCoupling NutSteelZinc/Clear1-8 x 2 3/4rod cpl nut zn 1-8 x 2-3/478
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Valley NuWACoupling NutGrade AGalvanized1-8 x 4a563 gra hvy hex coupling nut hdg usa24
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AMC IncCACoupling NutGrade 2Plain1-8coupling nut70
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