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5/16 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.
117 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 | |
American | NY | Coupling Nut | Steel | Zinc/Clear | 5/16-18 1 1/8 x 1/2 | 5/16-18 (1-1/8x1/2) coupling nut pl | 3800 |
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American | NY | Coupling Nut | Steel | Plain | 5/16-181 1/2 x 3/8 | 5/16-18(1-1/2x3/8) coupling nut | 8000 |
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American | NY | Coupling Nut | Steel | Zinc/Clear | 5/16-18 1 3/4 x 5/8 | 5/16-18 (1-3/4x5/8) coupling nut zp | 350 |
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Buy Hex Coupling Nuts from one of our FCH Network Members | ||||||||
Jackson | MS | Coupling Nut | Steel | Zinc/Clear | 5/16 | nc coupling nut | 374 |
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Weaver | WA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 coupling nut 18-8 ss | 125 |
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Weaver | WA | Coupling Nut | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 coupling nut plain | 350 |
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Weaver | WA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 coupling nut zinc | 200 |
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Weaver | WA | Coupling Nut | Steel | Zinc/Clear | 5/16-24 | 5/16-24 coupling nut zinc | 1800 |
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Weaver | WA | Coupling Nut | Steel | Plain | 5/16-18 x 7/8 | 5/16-18x7/8 short coupling nut plain | 100 |
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Weaver | WA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18x7/8 short coupling nut zinc | 2000 |
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Future Fastener | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 coupling nut plt | 9 |
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Future Fastener | TX | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 coupling nut ss | 40 |
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Jackson | MS | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 | nc coupling nut 18-8 304 | 52 |
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Jackson | MS | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | nc heavy coupling nut 5/8 wafx1 3/4 oal | 135 |
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YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18 x 1-1/8 coupling nut steel zinc plated | 251 |
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YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18 x 7/8 coupling nut narrow zinc pltd | 21 |
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YANKEE | NH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | coupling nut | 488 |
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ASMC | IL | Coupling Nut | Grade A | Plain | 5/16-24 x 7/16 x 7/8 | 5/16-24xw7/16xl7/8 fine a563 gra hex rod coupling nut low carb | 889 |
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ASMC | IL | Coupling Nut | Grade A | Zinc/Clear | 5/16-18 x 7/16 x 7/8 | 5/16-18xw7/16xl7/8 coarse a563 gra hex rod coupling nut low carb zp | 118 |
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ASMC | IL | Coupling Nut | Grade A | Zinc/Clear | 5/16-24 x 7/16 x 7/8 | 5/16-24xw7/16xl7/8 fine a563 gra hex rod coupling nut low carb zp | 373 |
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ASMC | IL | Coupling Nut | Grade A | Galvanized | 5/16-18 x 1/2 | 5/16-18xw1/2xl1 3/4 coarse a563 gra hex rod coupling nut low carb hdg b18.2.2 | 159 |
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GLF | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 x 1/2 | 5/16-18x1-3/4x1/2 waf hex coupling nut stl zc b18.2.2 () () | 202 |
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GLF | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 x 5/8 | 5/16-18x1-3/4x5/8 waf hex coupling nut stl zc b18.2.2 () () | 96 |
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Endries | WI | Coupling Nut | Steel | Plain | 5/16-18x1/2x7/8 coupling nut enviro-black hex free 500hr to red | 840 |
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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 | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/8 cplng nut 1/2 af stl znc b18.2.2 | 456 |
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Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/8 cplng nut 1/2 af stl znc b18.2.2 | 100 |
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Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 cplng nut stl znc b18.2.2 | 150 |
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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 | Steel | Zinc/Clear | 5/16-18 x 7/8 7/16 | 5/16-18 x 7/8 cplng nut 7/16 af stl znc b18.2.2 | 1700 |
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Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-24 x 7/8 7/16 | 5/16-24 x 7/8 cplng nut 7/16 af stl znc b18.2.2 | 50 |
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Ababa | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-24 x 7/8 7/16 | 5/16-24 x 7/8 cplng nut 7/16 af stl znc b18.2.2 | 25 |
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NAPPCO | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | hex coupling nut steel zp 5/16-18x1-3/4 (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) | 100 |
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NAPPCO | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | hex coupling nut steel zp 5/16-18x1-3/4 (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) (160-NUTS (STANDARD)) | 800 |
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MTP | CA | Coupling Nut | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1 steel plain coupling nut 1/2 a/f | 800 |
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ACCURATE | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 hex coupling nut zinc | 310 |
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ACCURATE | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | hex coupling nuts 18-8 304 | 56 |
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Century | NY | Coupling Nut | Steel | Plain | 5/16-18 x 1/2 wide 1-3/4 long coupling nut steel plain | 300 |
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Liberty | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18x1/2 afx1-3/4 long rod coupling nut zinc | 500 |
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Liberty | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | rod coupling nut 7/8lg 1/2af 18-8 s/s 1/2af 18-8 s/s | 500 |
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Liberty | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | rod coupling nut nut | 97 |
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Liberty | IL | Coupling Nut | Steel | Plain | 5/16-18 x 1/2 af x 1-3/4 long rod coupling nut plain | 950 |
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Komar | MO | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 | lg. coupling nut 1/2 dia | 2800 |
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American | NY | Coupling Nut | Steel | Zinc/Clear | 5/16-18 1 1/8 x 1/2 | 5/16-18 (1-1/8x1/2) coupling nut pl | 3800 |
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American | NY | Coupling Nut | Steel | Plain | 5/16-181 1/2 x 3/8 | 5/16-18(1-1/2x3/8) coupling nut | 8000 |
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American | NY | Coupling Nut | Steel | Zinc/Clear | 5/16-18 1 3/4 x 5/8 | 5/16-18 (1-3/4x5/8) coupling nut zp | 350 |
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Alma Bolt | MI | Coupling Nut | Steel | Plain | 5/16-18 | heavy(5/8 afx1 3/4) coupling nut | 2056 |
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Alma Bolt | MI | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 zinc plated(1/2x1 1/8) coupling nut | 1413 |
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Alma Bolt | MI | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | (5/8afx1 3/4lg) coupling nut | 300 |
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METRO IND | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | coupling nut uss | 970 |
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METRO IND | OH | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-24 | coupling nut SAE s/s | 25 |
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Fastener | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | coupling nut 5/16-18x7/8 zinc plated | 1130 |
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Fastener | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | coupling nut 5/16-18x1-1/8 zinc plated | 3 |
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Fastener | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-24 x 7/8 | coupling nut 5/16-24x7/8long zinc plated | 24 |
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RCFast | AZ | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | hex coupling nut stl 1 | 3100 |
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XL Screw | GA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/16 x 7/8 | hex coupling nuts dc-dc zp | 2,000 |
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XL Screw | GA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1/2 x 1 1/8 | hex coupling nuts dc-dc zp | 900 |
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SWACO | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18x7/8 coupling nut zinc | 193 |
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SWACO | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18x1 1/8 coupling nut zinc | 402 |
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Express | CA | Coupling Nut | Steel | Plain | 5/16-18 x 7/16 x 7/8 | 5/16-18x7/16x7/8 coupling nut econo plain | 150 |
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NutsBolts | NE | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 ss coupling nut | 46 |
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NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 s coupling nut zp | 536 |
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NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 l coupling nut zp | 57 |
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NutsBolts | NE | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 1/2 | 5/16-18 x 7/8 coupling nut zp 1/2 hex | 401 |
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NutsBolts | NE | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16 x 7/8 1/2 | 5/16x7/8 ss coupling nut 1/2 hex | 45 |
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UNEEDA | NJ | Coupling Nut | Steel | Plain | 5/16-18 | coupling nut | 274 |
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SII | IN | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 x 7/16 | 5/16-18 x l7/8 x w7/16 coupling nut zinc plated) b18.2.2 | 1339 |
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SII | IN | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 x 7/16 | 5/16-18 x l1-3/4 x w7/16 coupling nut zinc plated) b18.2.2 | 250 |
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IPC | VA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/16 | 5/16-18x7/16 hex coupling nut steel cr3 zinc-rohs 7/8 long | 75 |
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Northern | MN | Coupling Nut | Steel | Black Oxide | 5/16-18 | nc coupler nut black rie4037a | 349 |
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HBBOLT | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | hex coupling nut | 607 |
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HBBOLT | CA | Coupling Nut | Steel | Plain | 5/16-18 | economy coupling nut 7/8 | 150 |
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HBBOLT | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | coupling nut 18-8 ss | 98 |
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BIG BOLT | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 1 3/4 | nutscoupling nut300 (a1 a2 18-8 304 310 etc.)5/16-18hex 1 3/4 ong | 500 |
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JET FITTING | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18x7/8 coupling nut zinc CN-.31C.87-Z b18.2.2 | 193 |
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Delta | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | rod coupling nut zinc-econ 5/16-18 (7/16 AF X 7/8 LONG) | 2620 |
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Delta | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | rod coupling nut zinc 5/16-18 (5/8 AF X 1 3/4 LONG) | 100 |
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Delta | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | coupling nut zinc 5/16-18 (1/2 AF X 1 3/4 LONG) | 89 |
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QCS | OR | Coupling Nut | Steel | Plain | 5/16-18 x 7/16 x 7/8 | 5/16-18x7/16x7/8 econo rod coupling nut plain | 300 |
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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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AFI | FL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18x1-1/8-1/2 hex coupling nut st zn | 600 |
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SIS | AZ | Coupling Nut | Steel | Zinc/Clear | 5/16 | 5/16 coupling nut steel zinc | 50 |
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B & K FAST | PA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18 x 7/8 short coupling nuts zinc b18.2.2 | 10 |
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B & K FAST | PA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18 x 1 1/8 hex coupling nuts zinc b18.2.2 | 451 |
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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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TSF | TX | Coupling Nut | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 | hex coupling nut 316 ss 5/16-18 x 1 | 1 |
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Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18x7/8 hex rod coupling nut 7/16 across flats zinc | 5,000 |
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Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-24 x 7/8 | 5/16-24x7/8 hex rod coupling nut 7/16 across flats zinc | 5,000 |
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Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18x1 1/8 hex rod coupling nut 1/2 inch across flats zinc | 5,000 |
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Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18x7/8 hex rod coupling nut 1/2 inch across flats zinc | 5,000 |
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Kanebridge | IL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 hex rod coupling nut 1/2 inch across flats zinc | 5,000 |
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Kanebridge | IL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 7/8 | 5/16-18x7/8 hex rod coupling nut 1/2 inch across flats 18-8 stainless steel | 4.375 |
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Kanebridge | IL | Coupling Nut | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18x1 1/8 hex rod coupling nut 1/2 inch across flats grade 5 zinc | 16.250 |
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QFC | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 1/2 x 1 3/4 | 5/16-18 long coupling nut 1/2x1 3/4l zinc b18.2.2 | 150 |
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QFC | TX | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18 x 7/8 hex coupling nut zinc b18.2.2 | 1000 |
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Bostwick | IN | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 | 5/16-18 x 1 reducing coup nut 3/8-16 zinc b18.2.2 | 33 |
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ZAL INDUS | CA | Coupling Nut | Steel | Zinc/Clear | 5/16 x 1/4 | 5/16 x 1/4 reducer coupling nut pltd | 300 |
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Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | coupling nut zinc plated | 13389 |
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Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1/2 x 7/8 | coupling nut zinc plated | 1450 |
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Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-24 | coupling nut fine zinc plated | 1065 |
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Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1/4 | reducer coupling nut zinc plated | 200 |
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Lippin | CA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | hex coupling nut stainless 18-8 | 50 |
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Lippin | CA | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18 x 1 1/8 coup nut zn (1000) | 12800 |
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FastWare | Sask | Coupling Nut | Grade 2 | Zinc/Clear | 5/16-18 x 1/2 | afx1 nc coupling nut | 122 |
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SRF | AL | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | coupling nut s/s | 436 |
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SRF | AL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | coupling nut | 87 |
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SRF | AL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | coupling nut | 1,251 |
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CNB | IL | Coupling Nut | Grade 2 | Zinc/Clear | 5/16-18 | coupling nut gr.2 plate | 22 |
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BAYFASTCO | FL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 1/8 | coupling nut | 2400 |
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OBRIEN | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-18 1/2 | 5/16-18 coupling nut 1/2 af 7/8 long | 194 |
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OBRIEN | OH | Coupling Nut | Steel | Zinc/Clear | 5/16-24 x 7/8 | hex coupling nut | 150 |
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THRDFAST | FL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | coupling nut b18.2.2 | 45 |
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THRDFAST | FL | Coupling Nut | Steel | Zinc/Clear | 5/16-18 | coupling nut b18.2.2 | 25 |
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Hewes | NY | Coupling Nut | Steel | Zinc/Clear | 5/16 x 1 1/8 | 5/16x 1-1/8 rod coupling | 450 |
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GUIDON | NJ | Coupling Nut | Steel | Zinc/Clear | 5/16-18 x 7/8 | 1/2 hex | 850 |
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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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Valley Nu | WA | Coupling Nut | Steel | Zinc/Black | 5/16-18 x 1 3/4 | nc hex coupling nut zb | 118 |
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Valley Nu | WA | Coupling Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | nc 18-8 ss coupling nut | 15 |
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