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1/4-20 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.
103 results, (click on any line for more information)
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| American | NY | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 (7/8x3/8) coupling nut zp | 1050 |
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| American | NY | Coupling Nut | Steel | Plain | 1/4-20 | to 3/8-16 (1-1/8x1/2) reducing coupling nut | 4200 |
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| American | NY | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | coupling nut zp | 100 |
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| American | NY | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 (7/8x3/8) coupling nut zp | 1050 |
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| American | NY | Coupling Nut | Steel | Plain | 1/4-20 | to 3/8-16 (1-1/8x1/2) reducing coupling nut | 4200 |
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| SII | IN | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20 x7/8 zinc plated steel coupling nut) b18.2.2 | 2010 |
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| SII | IN | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 x 7/16 | 1/4-20xl1-3/4xw7/16 coupling nut zinc plated) b18.2.2 | 30 |
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| American | NY | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | coupling nut zp | 100 |
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| B & K FAST | PA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20 x 7/8 short coupling nuts zinc b18.2.2 | 2212 |
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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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| METRO IND | OH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | coupling nut uss | 1557 |
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| METRO IND | OH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | coupling nut uss | 1000 |
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| MAINSOURC | NH | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | coupling nut stl z/clr | 2094 |
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| Brikksen | 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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| MESAFAST | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | coupling nut 18.8 s/s | 396.0 |
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| MESAFAST | CA | Coupling Nut | 316, 317, A4 Stainless | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 hex rod coupling nut 316 stainless | 545.0 |
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| Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 3/8 | 1/4-20x7/8-3/8 hex rod coupling nut 3/8 across flats zinc | 15,000 |
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| Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | 1/4-20x1 1/2 hex rod coupling nut 7/16 across flats zinc | 15,000 |
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| Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | hex coupling nut | 15,000 |
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| Kanebridge | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 3/8 | 1/4-20x7/8-3/8 hex rod coupling nut 3/8 across flats 18-8 stainless steel | 3.750 |
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| Kanebridge | IL | Coupling Nut | Grade 5 | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20x7/8 hex rod coupling nut 7/16 across flats grade 5 zinc | 18.750 |
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| TSF | TX | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | coupling nut zinc 1/4-20 x 7/8 | 719 |
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| NAPPCO | TX | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | hex coupling nut steel s/s 1/4-20 x 7/8 | 113 |
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| SWACO | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | 1/4-20x7/8 coupling nut 18-8 | 100 |
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| SWACO | OH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | 1/4-20x1 1/2 coupling nut zinc | 679 |
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| SWACO | OH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20x7/8 coupling nut zinc | 81 |
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| SWACO | OH | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | 1/4-20x7/8 coupling nut pln | 755 |
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| YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 5/8 | 1/4-20 x 1-5/8 eye nut hangers (eye couplings) zinc plated | 25 |
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| YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 coupling nut zinc pltd | 110 |
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| YANKEE | NH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | coupling nut (7/8 long/3/8 hex) 18-8 s/s | 250 |
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| QCS | OR | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/16 x 1 3/4 | 1/4-20x7/16wx1-3/4l hex coupling nut zinc | 300 |
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| Cal Fastenrs | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | coupling nut | 44 |
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| MTP | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 3/87/8 | coupling nut | 1,500 |
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| NAPPCO | TX | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | hex coupling nut steel zp 1/4-20x1-3/4 | 1150 |
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| NutsBolts | NE | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 ss coupling nut | 100 |
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| NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 coupling nut zp | 900 |
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| NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 coupling nut zp | 100 |
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| ACCURATE | IL | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | hex coupling nut | 4085 |
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| ACCURATE | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | hex coupling nut 18-8 304 | 49 |
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| ACCURATE | IL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | hex coupling nut | 200 |
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| Mansco | MI | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | 1/4-20 x 1-1/2 coupling nut stl zinc 100/box | 400 |
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| Fastener | OH | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 3/8 x 7/8 | coupling nut 1/4-20x3/8x7/8 steel zinc plated | 40 |
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| Mansco | MI | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | eye coupling nut 100/box | 284 |
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| QFC | TX | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 bzp econo coupling nut 3/8x7/8l b18.2.2 | 81 |
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| Delta | TX | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | rod coupling nut zinc-econ 1/4-20 | 4227 |
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| Delta | TX | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | rod coupling nut 18-8 sst 1/4-20 | 85 |
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| IRF | NJ | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | hex body coupling nut clear | 13328 |
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| RCFast | AZ | Coupling Nut | Grade A | Zinc/Clear | 1/4-20 | hex coupling nut a563 gra cr+3 (3/8x7/8 economy) | 0 |
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| RCFast | AZ | Coupling Nut | Grade A | Zinc/Clear | 1/4-20 | hex coupling nut a563 gra cr+3 (7/16x1 3/4 regular) | 0 |
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| RCFast | AZ | Coupling Nut | Grade A | Zinc/Clear | 1/4-20 | hex coupling nut a563 gra cr+3 (7/16x7/8 economy) | 0 |
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| RCFast | AZ | Coupling Nut | Grade A | Plain | 1/4-20 | hex coupling nut a563 gra (7/16x1 3/4) | 0 |
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| RCFast | AZ | Coupling Nut | Steel | Galvanized | 1/4-20 | hex coupling nut a563 hdg (7/16x1 3/4) | 0 |
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| Liberty | IL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 x 7/16 | across the flats rod coupling nut plate | 300 |
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| Liberty | IL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | rod coupling nut (3/8x7/8) | 1,289 |
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| Alpine Su | UT | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 econo coupling nut zp | 1,439 |
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| BoltCraft | NE | Coupling Nut | Grade 2 | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20 x 7/8 rod coupling nut grade 2 zinc 1500/ctn-100/pkg | inquire |
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| UNEEDA | NJ | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | coupling nut | 775 |
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| ZAL INDUS | CA | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 coupling nut | 2,688 |
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| ZAL INDUS | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 3/8 | 1/4-20 x 7/8 coupling nut 3/8 shank zinc | 500 |
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| Empire | WA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 7/16 | 1/4-20 x 1-3/4 coupling nut zp 7/16 acf | 1000 |
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| Empire | WA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 coupling nut ss | 490 |
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| Empire | WA | Coupling Nut | Steel | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8(l) coupling nu | 200 |
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| Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 7/16 | 1/4-20 x 1 3/4 cplng nut 7/16 af stl znc b18.2.2 | 400 |
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| Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20 x 3/8 redc cplng nut stl znc b18.2.2 | 50 |
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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 | Steel | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20 x 7/8 cplng nut stl znc b18.2.2 | 200 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | coupling nut zinc plated | 40170 |
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| Lippin | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | hex coupling nut stainless 18-8 | 293 |
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| Jackson | MS | Coupling Nut | Grade 2H | Plain | 1/4-20 | nc 2h coupling nut 1/2 wafx7/8 oal | 1 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20 x 7/8 coup nut zn (2500) | 4500 |
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| TownCountry | AR | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | 1/4-20 x 1 3/4 hex coupling nut zinc | inquire |
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| BAYFASTCO | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | coupling nut | 100 |
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| SRF | AL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | coupling nut | 181 |
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| NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 coupling nut zp | 900 |
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| NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 coupling nut zp | 100 |
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| Olander | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 3/8 | 1/4-20 x 7/8 cplng nut 3/8 hex stl zn | 580 |
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| ASFCORP | MI | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 hx coupling nut ss pkg | 470 |
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| BAYFASTCO | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | coupling nut | 172 |
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| BAYFASTCO | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | coupling nut | 1213 |
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| HBBOLT | CA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | hex coupling nut | 442 |
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| HBBOLT | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 7/8 | coupling nuts 18-8 ss | 33 |
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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 | Zinc/Clear | 1/4-20 x 7/8 | coupling nut b18.2.2 | 679 |
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| THRDFAST | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | coupling nut b18.2.2 | 1,812 |
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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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| SIS | AZ | Coupling Nut | Grade 2 | Zinc/Clear | 1/4-20 x 7/8 | (3/8 width) coupling nut grade 2 - | 100 |
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| THRDFAST | MS | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | coupling nut b18.2.2 | 288 |
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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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| ISSCO | MO | Coupling Nut | Grade 2 | Zinc/Clear | 1/4-20 x 1 3/4 | nut hex coupling z/p 7/16 af, | 479 |
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| Hewes | NY | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | rod coupling nut pl | 2312 |
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| AFI | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 3 x 8 | 1/4-20x7/8-3x8 hex coupling nut stl zinc | 194 |
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| AFI | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | 1/4-20x7/8 hex coupling nut st zn | 192 |
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| AFI | FL | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 3/4 | 1/4-20x1-3/4 hex coupling nut st zn | 500 |
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| AFI | FL | Coupling Nut | Grade 5 | Zinc/Clear | 1/4-20 x 7/8 1/2 | 1/4-20x7/8-1/2 hex coupling nut g5 st zn | 250 |
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| XL Screw | GA | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 3/8 x 7/8 | hex coupling nuts dc-dc zp | 2,000 |
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| CONTAERO | NJ | Coupling Nut | Steel | Plain | 1/4-20 x 1 3/4 | coupling nut | 32800 |
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| Valley Nu | WA | Coupling Nut | Steel | Zinc/Black | 1/4-20 x 1 3/4 | nc hex coupling nut zb | 26 |
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| Valley Nu | WA | Coupling Nut | Steel | Zinc/Black | 1/4-20 x 3/8 x 7/8 | nc hex cplng economy nut zb | 4 |
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| Timberline | CO | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | rod cpl nut zn 1/4-20 x 7/8 | 1450 |
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| Timberline | CO | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 7/8 | rod cpl nut zn 1/4-20 x 7/8 | 951 |
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| Valley Nu | WA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | nc 18-8 ss coupling nut | 26 |
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| Alma Bolt | MI | Coupling Nut | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | coupling nut | 715 |
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| Alma Bolt | MI | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | (7/8 lgx3/8 af) st. st. coupling nut | 272 |
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| AMC Inc | CA | Coupling Nut | Grade 2 | Zinc/Clear | 1/4-20 | coupling nut | 4000 |
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