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Hex Coupling Nuts , Plain (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.

123 results, (click on any line for more information)

Search Results Sponsored by American Imperial Screw, your source for Coupling Nuts. For more results, visit   www.discountscrews.com
SupplierLocTypeMaterialFinishSizeDescriptionQty 
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BHAMALCoupling NutASTM A563 Grade DHPlain1-8 x 31-8x3 a563 dh hex coupling nut b18.2.22
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GLFOHCoupling NutSteelPlain1-8 x 2 1/21-8x2-1/2 hex coupling nut stl pln 153687 b18.2.2 () ()23
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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 NutSteelPlainnut coupling AN818-10D b18.2.2 () ()21
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GLFOHCoupling NutSteelPlainnut AN818-5D b18.2.2 () ()90
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GLFOHCoupling NutSteelPlain818-3tube coupling nut cres 304 AN818-3J b18.2.2 () ()100
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GLFOHCoupling NutSteelPlainAN AIRCRAFT FITTING AN818-4J b18.2.2 () ()79
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GLFOHCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2tube coupling nut 304ss AN818-8D b18.2.2 () ()25
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GLFOHCoupling NutSteelPlainAN818-12D b18.2.2 () ()491
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GLFOHCoupling NutAluminumPlain1/41/4-20 alum coupling nut AN818-4D b18.2.2 () ()188
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GLFOHCoupling NutSteelPlainSS-318-02 MS51531-B2S MS51531B2S b18.2.2 () ()15
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GLFOHCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13x1-1/4 hex coupling nut 18-8 s/s b18.2.2 () ()250
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GLFOHCoupling NutSteelPlain3/8-16 x 1 1/83/8-16x1-1/8 hex coupling nut stl pln b18.2.2 () ()60
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GLFOHCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/83/8-16x1-1/8 hex coupling nut 18-8 s/s b18.2.2 () ()230
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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 () ()55
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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 Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 3/410-24 x 3/4 cplng nut s/s b18.2.215
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 3/410-24 x 3/4 cplng nut s/s b18.2.230
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/410-32 x 3/4 cplng nut s/s b18.2.240
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/81/4-20 x 7/8 cplng nut s/s b18.2.2115
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/81/4-20 x 7/8 cplng nut s/s b18.2.280
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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 b18.2.241
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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 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 Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/83/8-16 x 1 1/8 cplng nut s/s b18.2.244
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/83/8-16 x 1 1/8 cplng nut s/s b18.2.245
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 3/43/8-16 x 1 3/4 cplng nut s/s b18.2.250
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AbabaCACoupling NutSteelPlain3/8-16 x 1 3/43/8-16 x 1 3/4 cplng nut stl pln b18.2.2500
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13 x 1 1/4 cplng nut s/s b18.2.247
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AbabaCACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13 x 1 1/4 cplng nut s/s b18.2.215
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AbabaCACoupling NutSteelPlain1/2-13 x 1 3/41/2-13 x 1 3/4 cplng nut stl pln b18.2.2196
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AbabaCACoupling NutSteelPlain1/2-13 x 1 7/81/2-13 x 1 3/4 cplng nut 7/8 a.f. stl pln b18.2.2278
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AbabaCACoupling NutSteelPlain1/2-13 x 1 7/81/2-13 x 1 3/4 cplng nut 7/8 a.f. stl pln b18.2.220
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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 b18.2.221
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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.)Plain5/8-115/8-11 coupling nut 18-8 stainless steel b18.2.21000
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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 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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QFCTXCoupling NutGrade APlain1/4-20 x 3/41/4-20x3/4 hex coupling nut a563 gra black b18.2.2100
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QFCTXCoupling NutGrade APlain1/4-20 x 3/41/4-20x3/4 hex coupling nut a563 gra black b18.2.220
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QFCTXCoupling NutGrade APlain3/8-16 x 1 3/43/8-16x1-3/4 coupling nut a563 gr.a plain black b18.2.275
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QFCTXCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/41/4nc 18-8ss coupling nut 7/8long b18.2.2620
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QFCTXCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/41/4nc 18-8ss coupling nut 7/8long b18.2.2206
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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 Nut316, 317, A4 StainlessPlain7/16-14 x 1 1/47/16-14 x 1 1/4 stainless coupling nuts t-316 b18.2.21
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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 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 NutSteelPlain3/8-16 x 1 3/43/8-16 x 1 3/4 long coupling nuts pln b18.2.2300
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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 NutSteelPlain1-14 x 2 3/41-14 x 2 3/4 hex coupling nuts pln b18.2.29
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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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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 7/81/4-20 x 7/8 stainless coupling nuts 18-8 b18.2.28
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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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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/83/8-16 x 1 1/8 stainless coupling nuts b18.2.266
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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13 x 1 1/4 stainless coupling nuts b18.2.250
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B & K FASTPACoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-9 x 2 1/27/8-9 x 2 1/2 stainless coupling nuts b18.2.23
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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 Nut316, 317, A4 StainlessPlain1/4-20 x 7/81/4-20x7/8 hex coupling nut 316ss 316ss b18.2.29218
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Marine FastenersFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/16-14 x 1 1/47/16-14x1 1/4 hex coupling nut 18-8 ss b18.2.22070
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Marine FastenersFLCoupling Nut316, 317, A4 StainlessPlain1/2-13 x 1 1/41/2-13x1-1/4 coupling nut 316 s/s 316ss b18.2.22110
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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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Marine FastenersFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-97/8-9 coupling nut 18-8 b18.2.2141
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Marine FastenersFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/41/2-20 x 1-1/4 coupling nut ss b18.2.21569
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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 Nut316, 317, A4 StainlessPlain1-8 x 2 1/21-8x2 1/2 coupling nut 316 s/s b18.2.28
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OSSCORICoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13x1 1/4 coupling nut 18-8 304 b18.2.25
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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 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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Bostwick INCoupling NutSteelPlain1-8 x 2 1/21-8 x 2 1/2 coupling nut plain finish b18.2.2240
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Bostwick INCoupling Nut316, 317, A4 StainlessPlain5/8-11 x 1 3/45/8-11 x 1 3/4 coupling nut 316 s/s b18.2.246
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Mid-ValleyCACoupling NutSteelPlain7/8-14 x 1 1/4coupling nut b18.2.2inquire
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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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JET FITTINGCACoupling NutSteelPlain3/816 x 1 3/4nut hex coupl 3/816x1-3/4 steel b18.2.2506
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JET FITTINGCACoupling NutSteelPlain1/2-13 x 1 3/4nut hex coupl 1/213x1-3/4 steel b18.2.230
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THRDFASTFLCoupling NutSteelPlain1/4-20coupling nut b18.2.21,381
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THRDFASTFLCoupling NutSteelPlain1/4-20 x 7/8coupling nut b18.2.21,282
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THRDFASTFLCoupling NutSteelPlain5/8-11coupling nut b18.2.2198
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THRDFASTFLCoupling NutSteelPlain7/8-9 x 2 1/2coupling nut b18.2.255
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THRDFASTFLCoupling NutSteelPlain1 1/8-7coupling nut b18.2.221
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THRDFASTFLCoupling Nut316, 317, A4 StainlessPlain1/2-13 x 1 1/4t-316 ss coupling nut b18.2.216
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THRDFASTFLCoupling NutSteelPlain1 1/2-6 x 4coupling nut b18.2.210
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THRDFASTFLCoupling NutSteelPlain5/8-11coupling nut b18.2.2107
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THRDFASTFLCoupling Nut316, 317, A4 StainlessPlain1-8t-316 ss coupling nut b18.2.29
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THRDFASTFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1 1/4-718-8 ss coupling nut b18.2.26
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THRDFASTFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-918-8 ss coupling nut b18.2.22
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THRDFASTFLCoupling NutSteelPlain1 1/2-6coupling nut b18.2.21
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THRDFASTFLCoupling NutSteelPlain1-8coupling nut b18.2.21
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THRDFASTOKCoupling NutSteelPlain3/8-16coupling nut b18.2.2298
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THRDFASTFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-2018-8 ss coupling nut b18.2.220
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THRDFASTFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/818-8 ss coupling nut b18.2.214
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THRDFASTTNCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/418-8 ss coupling nut b18.2.2114
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THRDFASTTNCoupling NutSteelPlain1/2-13coupling nut b18.2.23
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THRDFASTALCoupling NutSteelPlain3/4-10coupling nut b18.2.2124
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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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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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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 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 StainlessPlain3/4-10 x 2t-316 ss coupling nut b18.2.24
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THRDFASTMSCoupling Nut316, 317, A4 StainlessPlain1/2-13 x 1 1/4t-316 ss coupling nut b18.2.23
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THRDFASTMSCoupling Nut316, 317, A4 StainlessPlain1/4-20t-316 ss coupling nut b18.2.22
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THRDFASTOKCoupling NutSteelPlain1-8coupling nut b18.2.225
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THRDFASTALCoupling NutSteelPlain#10-24left hand hex nut coupling b18.2.211
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THRDFASTFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-32 x 1/218-8 ss coupling nut b18.2.22
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THRDFASTMSCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/418-8 ss coupling nut b18.2.25
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THRDFASTMSCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1 1/8-718-8 ss coupling nut b18.2.22
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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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THRDFASTFLCoupling Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/418-8 ss coupling nut b18.2.21
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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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All SizeTXCoupling NutSteelPlain7/16-14 x 9/16 x 1 1/47/16-14 x 9/16 x 1-1/4 coupling nut b18.2.2700
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All SizeTXCoupling NutSteelPlain7/8-9 x 2 1/27/8-9 x 2 1/2 coupling nut b18.2.220
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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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