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1/2-20 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.

27 results, (click on any line for more information)
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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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MESAFASTCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/4coupling nut 18-8 s/s12.0
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ss300
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ssinquire
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ssinquire
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ssinquire
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ssinquire
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ssinquire
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ss1000
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WeaverWACoupling NutSteelZinc/Clear1/2-201/2-20 coupling nut zinc281
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JacksonMSCoupling NutSteelZinc/Clear1/2-20 x 5/8 x 1 1/4oal fine thread coupling nut706
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HayesCACoupling NutSteelZinc/Clear1/2-20 x 1 3/41/2-20 x 1 3/4 coupling nut zinc179
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R&S IndusORCoupling NutSteelZinc/Clear1/2-20 x 5/8 x 1 1/41/2-20 x 5/8 x 1 1/4 economy coupling nut zinc27
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BrikksenFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut ssinquire
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OneMonroeNCCoupling NutSteelZinc/Clear1/2-20 x 11/161/2-20 coupling nut plated1
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OneMonroeNCCoupling NutSteelZinc/Clear1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut zinc plated17
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OneMonroeMACoupling NutSteelZinc/Clear1/2-20 x 11/16 x 1 1/41/2-20 x 1-1/4 coupling nut zinc plated 1/2-20 x 1-1/4 coupling nut zinc17
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American WICoupling NutSteelZinc/Clear1/2-20 x 11/161/2-20 nf hex coupling nut zinc (1-3/4)150
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Raw ProduNJCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 1/4coupling nuts 304 ss 1/2-20 x 1-1/462
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Raw ProduNJCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 11/16 x 1 3/4coupling nuts 304 ss 1/2-20 x 1-3/4500
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ManscoMICoupling NutSteelZinc/Clear1/2-20 coupling nut stl zinc (1-3/4 x 11/16) 100/box204
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AbabaCACoupling NutSteelZinc/Clear1/2-20 x 1 5/81/2-20 x 1 1/4 cplng nut 5/8 af stl znc b18.2.250
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HBBOLTCACoupling NutSteelZinc/Clear1/2-20econ coupling nuts42
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QFCTXCoupling NutSteelZinc/Clear1/2-201/2-20 economy coupling nut zinc b18.2.23
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B & K FASTPACoupling NutSteelZinc/Clear1/2-20 x 1 3/41/2-20 x 1 3/4 long coupling nuts zinc b18.2.28
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Kanebridge ILCoupling NutSteelZinc/Clear1/2-20 x 1 1/41/2-20x1 1/4 hex rod coupling nut 5/8 inch across flats zinc3.750
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ASFCORPMICoupling NutGrade 2Zinc/Clear1/2-20 x 1 3/41/2-20 x 1 3/4 hex coupling nut sae j995 gr 2 tri zn fe/zn 5an pkg4
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Valley NuWACoupling NutSteelZinc/Black1/2-20 x 5/8 x 11/4 nf hex cplng economy nut zb44
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