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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 | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Buy Hex Coupling Nuts from one of our FCH Network Members | ||||||||
| BHAM | AL | Coupling Nut | ASTM A563 Grade DH | Plain | 1-8 x 3 | 1-8x3 a563 dh hex coupling nut b18.2.2 | 2 |
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| GLF | OH | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | 1-8x2-1/2 hex coupling nut stl pln 153687 b18.2.2 () () | 23 |
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| GLF | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4-10 x 2 | 3/4-10x2 hex coupling nut 18-8 s/s b18.2.2 () () | 21 |
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| GLF | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4-10 x 2 1/4 | 3/4-10x2-1/4 hex coupling nut 18-8 s/s b18.2.2 () () | 1 |
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| GLF | OH | Coupling Nut | Steel | Plain | nut coupling AN818-10D b18.2.2 () () | 21 |
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| GLF | OH | Coupling Nut | Steel | Plain | nut AN818-5D b18.2.2 () () | 90 |
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| GLF | OH | Coupling Nut | Steel | Plain | 818-3 | tube coupling nut cres 304 AN818-3J b18.2.2 () () | 100 |
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| GLF | OH | Coupling Nut | Steel | Plain | AN AIRCRAFT FITTING AN818-4J b18.2.2 () () | 79 |
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| GLF | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2 | tube coupling nut 304ss AN818-8D b18.2.2 () () | 25 |
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| GLF | OH | Coupling Nut | Steel | Plain | AN818-12D b18.2.2 () () | 491 |
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| GLF | OH | Coupling Nut | Aluminum | Plain | 1/4 | 1/4-20 alum coupling nut AN818-4D b18.2.2 () () | 188 |
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| GLF | OH | Coupling Nut | Steel | Plain | SS-318-02 MS51531-B2S MS51531B2S b18.2.2 () () | 15 |
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| GLF | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 1/4 | 1/2-13x1-1/4 hex coupling nut 18-8 s/s b18.2.2 () () | 250 |
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| GLF | OH | Coupling Nut | Steel | Plain | 3/8-16 x 1 1/8 | 3/8-16x1-1/8 hex coupling nut stl pln b18.2.2 () () | 60 |
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| GLF | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/8 | 3/8-16x1-1/8 hex coupling nut 18-8 s/s b18.2.2 () () | 230 |
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| GLF | OH | Coupling Nut | Steel | Plain | 5/8-11 x 2 13/16 | 5/8-11x2-1/8 hex coupling nut 13/16 af stl pln b18.2.2 () () | 55 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 x 2 1 3/8 | 1-8 x 2 3/4 cplng nut 1 3/8 af s/s b18.2.2 | 4 |
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| Ababa | CA | Coupling Nut | Steel | Plain | 1-8 x 2 1 3/8 | 1-8 x 2 3/4 cplng nut 1 3/8 af stl pln b18.2.2 | 2 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3/4 | 10-24 x 3/4 cplng nut s/s b18.2.2 | 15 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3/4 | 10-24 x 3/4 cplng nut s/s b18.2.2 | 30 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3/4 | 10-32 x 3/4 cplng nut s/s b18.2.2 | 40 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 cplng nut s/s b18.2.2 | 115 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 cplng nut s/s b18.2.2 | 80 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 7/16 | 5/16-18 x 1 cplng nut 7/16 af s/s b18.2.2 | 41 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 7/16 | 5/16-18 x 1 cplng nut 7/16 af s/s b18.2.2 | 20 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 7/8 | 5/16-18 x 7/8 cplng nut s/s b18.2.2 | 4 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/8 | 3/8-16 x 1 1/8 cplng nut s/s b18.2.2 | 44 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/8 | 3/8-16 x 1 1/8 cplng nut s/s b18.2.2 | 45 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 cplng nut s/s b18.2.2 | 50 |
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| Ababa | CA | Coupling Nut | Steel | Plain | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 cplng nut stl pln b18.2.2 | 500 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 cplng nut s/s b18.2.2 | 47 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 cplng nut s/s b18.2.2 | 15 |
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| Ababa | CA | Coupling Nut | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 cplng nut stl pln b18.2.2 | 196 |
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| Ababa | CA | Coupling Nut | Steel | Plain | 1/2-13 x 1 7/8 | 1/2-13 x 1 3/4 cplng nut 7/8 a.f. stl pln b18.2.2 | 278 |
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| Ababa | CA | Coupling Nut | Steel | Plain | 1/2-13 x 1 7/8 | 1/2-13 x 1 3/4 cplng nut 7/8 a.f. stl pln b18.2.2 | 20 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 cplng nut s/s b18.2.2 | 21 |
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| JET FITTING | CA | Coupling Nut | Aluminum | Plain | 3/4-16 x 1 1/4 x 1 | 3/4-16x1-1/4x1 nut coupling hex aluminum 1216F20-16CN A b18.2.2 | 4 |
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| Standard | MA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 | 5/8-11 coupling nut 18-8 stainless steel b18.2.2 | 1000 |
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| Standard | MA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4-10 | 3/4-10 coupling nut 18-8 stainless steel b18.2.2 | 117 |
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| Standard | MA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 coupling nut 18-8 stainless steel b18.2.2 | 2950 |
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| QFC | TX | Coupling Nut | Grade A | Plain | 1/4-20 x 3/4 | 1/4-20x3/4 hex coupling nut a563 gra black b18.2.2 | 100 |
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| QFC | TX | Coupling Nut | Grade A | Plain | 1/4-20 x 3/4 | 1/4-20x3/4 hex coupling nut a563 gra black b18.2.2 | 20 |
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| QFC | TX | Coupling Nut | Grade A | Plain | 3/8-16 x 1 3/4 | 3/8-16x1-3/4 coupling nut a563 gr.a plain black b18.2.2 | 75 |
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| QFC | TX | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 | 1/4nc 18-8ss coupling nut 7/8long b18.2.2 | 620 |
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| QFC | TX | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 | 1/4nc 18-8ss coupling nut 7/8long b18.2.2 | 206 |
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| B & K FAST | PA | Coupling Nut | Steel | Plain | 3/4-10 x 2 1/4 | 3/4-10 x 2 1/4 long coupling nuts plain b18.2.2 | 1 |
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| B & K FAST | PA | Coupling Nut | 316, 317, A4 Stainless | Plain | 7/16-14 x 1 1/4 | 7/16-14 x 1 1/4 stainless coupling nuts t-316 b18.2.2 | 1 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 stainless coupling nuts b18.2.2 | 6 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4-10 x 2 1/4 | 3/4-10 x 2 1/4 stainless coupling nuts b18.2.2 | 15 |
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| B & K FAST | PA | Coupling Nut | Steel | Plain | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 long coupling nuts pln b18.2.2 | 300 |
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| B & K FAST | PA | Coupling Nut | Steel | Plain | 5/8-11 x 2 1/8 | 5/8-11 x 2 1/8 long coupling nuts plain b18.2.2 | 180 |
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| B & K FAST | PA | Coupling Nut | Steel | Plain | 1-14 x 2 3/4 | 1-14 x 2 3/4 hex coupling nuts pln b18.2.2 | 9 |
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| B & K FAST | PA | Coupling Nut | Steel | Plain | 3/4-10 x 2 1/4 | 3/4-10 x 2 1/4 heavy hex coupling nut plain b18.2.2 | 4 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 stainless coupling nuts 18-8 b18.2.2 | 8 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18 x 1 stainless coupling nuts b18.2.2 | 29 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/8 | 3/8-16 x 1 1/8 stainless coupling nuts b18.2.2 | 66 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 stainless coupling nuts b18.2.2 | 50 |
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| B & K FAST | PA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/8-9 x 2 1/2 | 7/8-9 x 2 1/2 stainless coupling nuts b18.2.2 | 3 |
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| BHAM | GA | Coupling Nut | Steel | Plain | 3/4-10 | 3/4-10 super duplex 70-30 heavy couplng nuts b18.2.2 | 25 |
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| Marine Fasteners | FL | Coupling Nut | 316, 317, A4 Stainless | Plain | 1/4-20 x 7/8 | 1/4-20x7/8 hex coupling nut 316ss 316ss b18.2.2 | 9218 |
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| Marine Fasteners | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/16-14 x 1 1/4 | 7/16-14x1 1/4 hex coupling nut 18-8 ss b18.2.2 | 2070 |
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| Marine Fasteners | FL | Coupling Nut | 316, 317, A4 Stainless | Plain | 1/2-13 x 1 1/4 | 1/2-13x1-1/4 coupling nut 316 s/s 316ss b18.2.2 | 2110 |
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| Marine Fasteners | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4-10 x 2 1/4 | 3/4-10x2-1/4 hex coupling nut 18-8 ss b18.2.2 | 266 |
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| Marine Fasteners | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/8-9 | 7/8-9 coupling nut 18-8 b18.2.2 | 141 |
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| Marine Fasteners | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-20 x 1 1/4 | 1/2-20 x 1-1/4 coupling nut ss b18.2.2 | 1569 |
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| KBS | TN | Coupling Nut | Steel | Plain | 5/8-11 x 2 1/8 | 5/8-11 x 2 1/8 hvy coupling nut b18.2.2 | 7 |
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| OSSCO | RI | Coupling Nut | 316, 317, A4 Stainless | Plain | 1-8 x 2 1/2 | 1-8x2 1/2 coupling nut 316 s/s b18.2.2 | 8 |
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| OSSCO | RI | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 1/4 | 1/2-13x1 1/4 coupling nut 18-8 304 b18.2.2 | 5 |
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| OSSCO | RI | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 x 1 3/4 | 5/8-11x1 3/4 coupling nut 18-8 304 b18.2.2 | 4 |
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| QFC | TX | Coupling Nut | Steel | Plain | 5/8-11 13/16 x 2 1/8 | 5/8-11 hex coupling nut plain 13/16x2 1/8 b18.2.2 | 180 |
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| Bostwick | IN | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | 1-8 x 2 1/2 coupling nut plain finish b18.2.2 | 240 |
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| Bostwick | IN | Coupling Nut | 316, 317, A4 Stainless | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 coupling nut 316 s/s b18.2.2 | 46 |
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| Mid-Valley | CA | Coupling Nut | Steel | Plain | 7/8-14 x 1 1/4 | coupling nut b18.2.2 | inquire |
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| JET FITTING | CA | Coupling Nut | Aluminum | Plain | 3/4-20 x 1 1/4 x 1 | nut coupling 3/4-20x1-1/4x1 hex aluminum b18.2.2 | 4 |
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| JET FITTING | CA | Coupling Nut | Steel | Plain | 3/816 x 1 3/4 | nut hex coupl 3/816x1-3/4 steel b18.2.2 | 506 |
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| JET FITTING | CA | Coupling Nut | Steel | Plain | 1/2-13 x 1 3/4 | nut hex coupl 1/213x1-3/4 steel b18.2.2 | 30 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 1/4-20 | coupling nut b18.2.2 | 1,381 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | coupling nut b18.2.2 | 1,282 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 5/8-11 | coupling nut b18.2.2 | 198 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 7/8-9 x 2 1/2 | coupling nut b18.2.2 | 55 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 1 1/8-7 | coupling nut b18.2.2 | 21 |
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| THRDFAST | FL | Coupling Nut | 316, 317, A4 Stainless | Plain | 1/2-13 x 1 1/4 | t-316 ss coupling nut b18.2.2 | 16 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 1 1/2-6 x 4 | coupling nut b18.2.2 | 10 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 5/8-11 | coupling nut b18.2.2 | 107 |
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| THRDFAST | FL | Coupling Nut | 316, 317, A4 Stainless | Plain | 1-8 | t-316 ss coupling nut b18.2.2 | 9 |
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| THRDFAST | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1 1/4-7 | 18-8 ss coupling nut b18.2.2 | 6 |
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| THRDFAST | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/8-9 | 18-8 ss coupling nut b18.2.2 | 2 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 1 1/2-6 | coupling nut b18.2.2 | 1 |
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| THRDFAST | FL | Coupling Nut | Steel | Plain | 1-8 | coupling nut b18.2.2 | 1 |
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| THRDFAST | OK | Coupling Nut | Steel | Plain | 3/8-16 | coupling nut b18.2.2 | 298 |
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| THRDFAST | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 18-8 ss coupling nut b18.2.2 | 20 |
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| THRDFAST | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/8 | 18-8 ss coupling nut b18.2.2 | 14 |
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| THRDFAST | TN | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 1/4 | 18-8 ss coupling nut b18.2.2 | 114 |
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| THRDFAST | TN | Coupling Nut | Steel | Plain | 1/2-13 | coupling nut b18.2.2 | 3 |
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| THRDFAST | AL | Coupling Nut | Steel | Plain | 3/4-10 | coupling nut b18.2.2 | 124 |
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| THRDFAST | AL | Coupling Nut | Grade 2H | Plain | 1-8 x 2 3/4 | h coupling nut b18.2.2 | 20 |
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| KBS | TN | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-14 x 3 | 1-14 x 3 coupling nut s/s b18.2.2 | 99 |
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| KBS | TN | Coupling Nut | Steel | Plain | 5/8-18 x 1 7/8 | 5/8-18 x 1 7/8 hvy coupling nut 15/16 hex b18.2.2 | 467 |
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| KBS | TN | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 x 2 1/8 | 5/8-11 x 2 1/8 coupling nut 13/16hex s/s b18.2.2 | 80 |
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| KBS | TN | Coupling Nut | Steel | Plain | 3/4-10 x 2 1/4 | 3/4-10 x 2 1/4 hvy coupling nut b18.2.2 | 22 |
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| THRDFAST | AL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 x 1 3/4 | 18-8 ss coupling nut b18.2.2 | 177 |
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| THRDFAST | AL | Coupling Nut | 316, 317, A4 Stainless | Plain | 3/4-10 x 2 | t-316 ss coupling nut b18.2.2 | 4 |
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| THRDFAST | MS | Coupling Nut | 316, 317, A4 Stainless | Plain | 1/2-13 x 1 1/4 | t-316 ss coupling nut b18.2.2 | 3 |
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| THRDFAST | MS | Coupling Nut | 316, 317, A4 Stainless | Plain | 1/4-20 | t-316 ss coupling nut b18.2.2 | 2 |
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| THRDFAST | OK | Coupling Nut | Steel | Plain | 1-8 | coupling nut b18.2.2 | 25 |
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| THRDFAST | AL | Coupling Nut | Steel | Plain | #10-24 | left hand hex nut coupling b18.2.2 | 11 |
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| THRDFAST | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #6-32 x 1/2 | 18-8 ss coupling nut b18.2.2 | 2 |
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| THRDFAST | MS | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 3/4 | 18-8 ss coupling nut b18.2.2 | 5 |
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| THRDFAST | MS | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1 1/8-7 | 18-8 ss coupling nut b18.2.2 | 2 |
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| THRDFAST | AL | Coupling Nut | 316, 317, A4 Stainless | Plain | 5/8-11 x .16 | mmx1 1/2 t-316l coupling nut b18.2.2 | 29 |
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| THRDFAST | FL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 3/4 | 18-8 ss coupling nut b18.2.2 | 1 |
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| WSB | KY | Coupling Nut | Grade 2 | Plain | 5/8-11 x 2 13/16 | nut hex coupling gr2 (pl) 5/8-11x2 1/8 13/16 b18.2.2 | 1,165 |
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| All Size | TX | Coupling Nut | Steel | Plain | 7/16-14 x 9/16 x 1 1/4 | 7/16-14 x 9/16 x 1-1/4 coupling nut b18.2.2 | 700 |
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| All Size | TX | Coupling Nut | Steel | Plain | 7/8-9 x 2 1/2 | 7/8-9 x 2 1/2 coupling nut b18.2.2 | 20 |
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| All Size | TX | Coupling Nut | Steel | Plain | 5/16-18 x 7/8 | 5/16-18 x 7/8 short coupling nut b18.2.2 | 16 |
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| All Size | TX | Coupling Nut | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1-3/4 coupling nut heavy b18.2.2 | 86 |
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