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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.
102 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 | 1-8 | (2-3/4x1-3/8) coupling nut pl | 44 |
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| American | NY | Coupling Nut | 316, 317, A4 Stainless | Plain | 1-8 | rod coupler nut 316 stainless | 1 |
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| American | NY | Coupling Nut | Steel | Galvanized | 1 x 3 | coupling nut hot dipped | 2 |
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| American | NY | Coupling Nut | Steel | Galvanized | 1 x 3 | coupling nut hdg | 2 |
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| Buy Hex Coupling Nuts from one of our FCH Network Members | ||||||||
| TSF | TX | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 x 1 | hex coupling nut steel zinc plated 1 -8 x 2 3/4 x 1 3/8 af | 21 |
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| B & K FAST | PA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | 1-8 x 2 1/2 coupling nuts zinc b18.2.2 | 12 |
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| B & K FAST | PA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 | 1-8 x 2 3/4 long coupling nuts zinc b18.2.2 | 7 |
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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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| YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 1-8 | 1-8 (2-3/4 long) coupling nut steel zinc plated | 10 |
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| YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 1-14 | coupling nut | 10 |
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| ACF | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 | 1-8x2-3/4 rod coupling nut z/p rohs | 1 |
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| BHAM | AL | Coupling Nut | Grade 2H | Plain | 1-8 x 2 3/4 | 1-8 x 2 3/4 coup nut a194-2h plain b18.2.2 | 1 |
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| VertexD | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 1 1/4 x 2 1/2 | 1-8 coupling nut 1-1/4x2-1/2 18.8 ss | 1004 |
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| METRO IND | OH | Coupling Nut | Steel | Zinc/Clear | 1-8 | coupling nut uss | 21 |
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| METRO IND | OH | Coupling Nut | Steel | Plain | 1-8 x 1 1 5/8 | 1-8x1 1/2 coupling nut 1 5/8 waf | 5 |
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| NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 1-8 | 1-8 coupling nut zp | 80 |
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| American | NY | Coupling Nut | Steel | Zinc/Clear | 1-8 | (2-3/4x1-3/8) coupling nut pl | 44 |
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| American | NY | Coupling Nut | Steel | Galvanized | 1 x 3 | coupling nut hot dipped | 2 |
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| American | NY | Coupling Nut | Steel | Galvanized | 1 x 3 | 1 x 3 coupling nut hdg | 2 |
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| ZAL INDUS | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | 1-8 x 2 1/2 coupling nut pltd | 4 |
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| ACCURATE | IL | Coupling Nut | Steel | Zinc/Clear | 1 | 1 1/4-7 hex coupling nut (1-5/8 widex3 long) | 4 |
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| ACCURATE | IL | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | hex coupling nut | 7 |
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| Big Red | OK | Coupling Nut | Grade 8 | Plain | 1-8 x 2 3/4 | 1-8 x 2-3/4 long nc gr.8 hardened hex coupling nut (1-1/2 hex)-plain finish (black) | 50 |
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| Empire | WA | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | 1-8 x 2-1/2 rod coupling nut | 73 |
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| Empire | WA | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | 1-8 x 2-1/2 rod coupling nut | 300 |
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| ASMC | IL | Coupling Nut | Grade A | Zinc/Clear | 1-8 x 1 1/4 | 1-8xw1 1/4xl2 1/2 coarse a563 gra hex rod coupling nut low carb zp unc | 5 |
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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 | Steel | Zinc/Clear | 1-8 x 2 1 3/8 | 1-8 x 2 3/4 cplng nut 1 3/8 af stl znc b18.2.2 | 10 |
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| Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1 3/8 | 1-8 x 2 3/4 cplng nut 1 3/8 af stl znc b18.2.2 | 5 |
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| Lippin | CA | Coupling Nut | Grade 5 | Plain | 1-8 x 3/4 | 1-8 x 3/4-10 reducer coupling nut grade 5 with witness holes plain | 10 |
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| Lippin | CA | Coupling Nut | Grade 5 | Plain | 1-8 x 7/8 | 1-8 x 7/8-9 reducer coupling nut grade 5 with witness holes plain | 10 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 3/4 | reducer coupling nut zinc plated | 100 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 7/8 | reducer coupling nut zinc plated | 30 |
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| Lippin | CA | Coupling Nut | Steel | Plain | 1-8 x 5/8 | reducer coupling nut plain | 151 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 | coupling nut w/ sight-hole zinc plated | 1350 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 | coupling nut zinc plated | 1000 |
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| Lippin | CA | Coupling Nut | Steel | Plain | 1-8 | coupling nut plain | 842 |
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| Lippin | CA | Coupling Nut | Steel | Galvanized | 1-8 | coupling nut hot dipped galvanized | 1700 |
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| Lippin | CA | Coupling Nut | Steel | Galvanized | 1-8 | coupling nut w/ sight-hole hot dipped galvanized | 1685 |
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| Jackson | MS | Coupling Nut | Grade 2H | Plain | 1-8 1 5/8 | 1-8 nc 2h coupling nut 1 5/8 wafx2 3/4 oal | 3 |
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| Jackson | MS | Coupling Nut | Steel | Zinc/Clear | 1-8 x 1 1/4 x 2 1/2 | oal nc coupling nut | 95 |
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| Jackson | MS | Coupling Nut | Steel | Zinc/Clear | 1-14 x 1 3/8 | wafx2 3/4 oal nf coupling nut | 4 |
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| Ababa | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 x 2 1/2 | 1-8 x 2 1/2 cplng nut 1 3/8 a.f. s/s b18.2.2 | 3 |
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| SII | IN | Coupling Nut | Steel | Zinc/Clear | 1-8 | 1-8 zinc rod coupling) b18.2.2 | 50 |
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| Future Fastener | TX | Coupling Nut | Steel | Zinc/Clear | 1-8 | 1-8 coupling nut plt | 25 |
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| Jackson | MS | Coupling Nut | Steel | Galvanized | 1-8 | nc coupling nut hdg 1 1/4wafx2 1/2 oal | 2 |
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| Jackson | MS | Coupling Nut | Grade 2H | Galvanized | 1-8 | nc 2h coupling nut hdg 1 5/8 wafx2 3/4 oal | 122 |
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| Jackson | MS | Coupling Nut | Steel | Plain | 1 | 1 nc coupling nut finish | 317 |
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| Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 | 1-8 x 2 3/4 coup nut zn (75) | 150 |
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| Lippin | CA | Coupling Nut | Steel | Plain | 1-8 | 1-8 coup nut plain (50) | 642 |
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| FastWare | Sask | Coupling Nut | Grade 2 | Plain | 1-14 x 1 3/8 | afx2 3/4 uns coupling nut | 1,081 |
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| FastWare | Sask | Coupling Nut | Grade 2 | Zinc/Clear | 1-8 x 1 3/8 | afx2 3/4 nc coupling nut | 10 |
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| FastWare | Sask | Coupling Nut | Grade 2 | Plain | 1-8 x 1 3/8 | afx2 3/4 nc coupling nut | 20 |
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| QFC | TX | Coupling Nut | Steel | Galvanized | 1-8 | 1-8 hvy hex coup nut hdg regular b18.2.2 | 73 |
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| EBN Indus | 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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| Certified | IL | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | 1-8 x 2-1/2 hex coupling nut-zps. b18.2.2 | 65 |
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| RCFast | AZ | Coupling Nut | Grade A | Zinc/Clear | 1 | 1 hex coupling nut a563 gra cr+3 (1 3/8x2 3/4 regular) | inquire |
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| RCFast | AZ | Coupling Nut | Grade A | Zinc/Clear | 1 | 1 hex coupling nut a563 gra cr+3 (1 1/4x2 1/2 economy) | inquire |
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| RCFast | AZ | Coupling Nut | Grade A | Zinc/Clear | 1-14 | hex coupling nut a563 gra cr+3 (1 3/8x2 3/4 regular) | inquire |
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| RCFast | AZ | Coupling Nut | Grade A | Plain | 1 | 1 hex coupling nut a563 gra (1 1/4x2 1/2) | inquire |
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| RCFast | AZ | Coupling Nut | Steel | Galvanized | 1 | 1 hex coupling nut a563 hdg (1 3/8x2 3/4) | inquire |
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| RCFast | AZ | Coupling Nut | Steel | Galvanized | 1 | 1 hex coupling nut a563 hdg (1 1/4x2 1/2) | inquire |
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| BHAM | AL | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | coupling nut | 30 |
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| ASFCORP | MI | Coupling Nut | Grade 2 | Zinc/Clear | 1-8 x 2 1/2 | 1-8 x 2 1/2 hex coupling nut sae j995 gr 2 tri zn fe/zn 5an pkg | 6 |
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| HBBOLT | CA | Coupling Nut | Steel | Galvanized | 1-8 | coupling nut h.d.g. | 36 |
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| HBBOLT | CA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | hex coupling nut | 37 |
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| HBBOLT | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 | hex coupling nut 18-8 304 | 18 |
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| OBRIEN | OH | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | hex coupling nut | 69 |
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| OBRIEN | OH | Coupling Nut | Steel | Plain | 1-8 2 1/2 1 1/4 | 1-8 hex coupling nut 2 1/2 length 1 1/4 width | 200 |
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| MidStates | MI | Coupling Nut | Steel | Zinc/Clear | 1 x 1/2 | 1inx1/2 reducer coupling nut znc | 4 |
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| MidStates | MI | Coupling Nut | Steel | Plain | 1-8 | coupling nut lh thrd | 4 |
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| MidStates | MI | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | coupling nut | 50 |
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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 | Steel | Plain | 1-8 | coupling nut b18.2.2 | 1 |
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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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| THRDFAST | AL | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | coupling nut b18.2.2 | 43 |
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| THRDFAST | OK | Coupling Nut | Steel | Plain | 1-8 | coupling nut b18.2.2 | 25 |
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| THRDFAST | OK | Coupling Nut | Steel | Zinc/Clear | 1-8 2 1/2 | 1-8 coupling nut length 2 1/2 b18.2.2 | 5 |
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| THRDFAST | AL | Coupling Nut | Grade 5 | Galvanized | 1-8 x 2 3/4 | coupling nut hdg b18.2.2 | 2 |
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| THRDFAST | AL | Coupling Nut | Grade A | Galvanized | 1-8 x 3 | a563 gr a hex coupling nut hdg domestic b18.2.2 | 40 |
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| Liberty | IL | Coupling Nut | Steel | Zinc/Clear | 1-8 | rod coupling nut plate plate | 10 |
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| Liberty | IL | Coupling Nut | Steel | Plain | 1-8 | rod coupler | 5 |
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| ISSCO | MO | Coupling Nut | Grade 2 | Zinc/Clear | 1-14 x 2 1/2 | nut hex coupling z/p | 85 |
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| Hewes | NY | Coupling Nut | Grade 2 | Plain | 1-8 x 2 3/4 | coupling nut1-3/8 hex gr2 | 70 |
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| XL Screw | GA | Coupling Nut | Steel | Zinc/Clear | 1-8 x 1 3/8 x 2 3/4 | hex coupling nuts dc-dc zp | 60 |
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| Revcar | VA | Coupling Nut | Steel | Galvanized | 1-8 x 2 3/4 | coupling nut 1-1/2 ac flats hdg tapped oversize .020 | 36 |
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| MasFasCorp | NV | Coupling Nut | Steel | Plain | 1-8 x 6 | round coupling nut per dwg #imban730 | inquire |
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| GLF | OH | Coupling Nut | Steel | Plain | 1-8 x 2 1/2 | hex coupling nut 153687 nut | 63 |
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| GLF | OH | Coupling Nut | Steel | Galvanized | 1-8 x 2 1/2 | hex coupling nut hdg nut | 29 |
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| GLF | OH | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 1/2 | hex coupling nut zc nut | 108 |
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| Kanebridge | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 x 2 1/2 | 1-8x2 1/2 hex rod coupling nut 1 1/4 inch across flats 18-8 stainless steel | 0.500 |
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| Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 | 1-8x2 3/4 hex rod coupling nut 1 3/8 inch across flats zinc | 0.500 |
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| Kanebridge | IL | Coupling Nut | Grade 5 | Zinc/Clear | 1-8 x 2 3/4 | 1-8x2 3/4 hex rod coupling nut 1 3/8 inch across flats grade 5 zinc | 1,000 |
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| Valley Nu | WA | Coupling Nut | Steel | Plain | 1-8 x 2 3/4 x 1 | 3/8 nc hex coupling nut pl | 50 |
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| Valley Nu | WA | Coupling Nut | Grade DH | Galvanized | 1-8 x 6 x 1 5/8 | a563 dh hvy hex coupling nut hdg usa | 4 |
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| Valley Nu | WA | Coupling Nut | Steel | Zinc/Black | 1-14 | nf hex cplng economy nut zb | 29 |
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| Valley Nu | WA | Coupling Nut | Steel | Zinc/Black | 1-8 x 2 3/4 x 1 | 3/8 nc hex coupling nut zb | 63 |
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| Valley Nu | WA | Coupling Nut | Grade DH | Galvanized | 1-8 x 3 x 1 5/8 | a563 grdh hvy hex coupling nut hdg usa | 73 |
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| Valley Nu | WA | Coupling Nut | Grade DH | Plain | 1-8 x 3 x 1 5/8 | a563 grdh hvy hex coupling nut usa | 1 |
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| Valley Nu | WA | Coupling Nut | Steel | Plain | 1-8 x 1/2 | nc hex reducing coupling nut pl | 1 |
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| Valley Nu | WA | Coupling Nut | Steel | Galvanized | 1-8 x 2 3/4 x 1 | 3/8 nc hex coupling nut hdg | 55 |
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| Timberline | CO | Coupling Nut | Steel | Zinc/Clear | 1-8 x 2 3/4 | rod cpl nut zn 1-8 x 2-3/4 | 78 |
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| Valley Nu | WA | Coupling Nut | Grade A | Galvanized | 1-8 x 4 | a563 gra hvy hex coupling nut hdg usa | 24 |
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| AMC Inc | CA | Coupling Nut | Grade 2 | Plain | 1-8 | coupling nut | 70 |
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