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Square Nuts
Square Nuts are just four-sided nuts, but compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening. Square nuts are typically mated with square-headed bolts.
2,038 Square Nut, showing 200, (click on any line for more information)
| Buy Square Nuts from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Jackson | MS | Square Nut | Steel | Galvanized | 3/4 | nc square nut hdg | 141 |
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| Jackson | MS | Square Nut | Steel | Plain | 7/16 | nc square nut | 28 |
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| Jackson | MS | Square Nut | Steel | Plain | 7/8 | nc square nut | 116 |
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| Jackson | MS | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #6-32 | 18-8 304 square nut square nut 18-8 304 | 100 |
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| Jackson | MS | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 | 18-8 304 square nut square nut 18-8 304 | 92 |
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| Jackson | MS | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 | nc 18-8 304 square nut | 46 |
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| Jackson | MS | Square Nut | Steel | Zinc/Clear | #10-24 | nc square nut | 7056 |
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| Jackson | MS | Square Nut | Steel | Zinc/Clear | #10-32 | nf square nut | 193 |
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| Jackson | MS | Square Nut | Steel | Zinc/Clear | 1/4 | nc square nut | 7933 |
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| Jackson | MS | Square Nut | Steel | Zinc/Clear | 5/16 | nc square nut | 6639 |
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| Jackson | MS | Square Nut | Steel | Zinc/Clear | 3/8 | nc square nut | 1449 |
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| Jackson | MS | Square Nut | Steel | Zinc/Clear | 1/2 | nc square nut | 831 |
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| Jackson | MS | Square Nut | Steel | Plain | 3/4 | nc heavy square nut | 9 |
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| MAINSOURC | NH | Square Nut | Steel | Plain | 1/4-20 | 1/4-20 square nut stl | 1780 |
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| MAINSOURC | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 square nut 18-8 ss | 218 |
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| MAINSOURC | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 | 1/2-13 square nut 18-8 ss | 10 |
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| Weaver | WA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 | 10-32 square nut 18-8 ss | 107 |
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| Weaver | WA | Square Nut | Steel | Zinc/Clear | #10-32 | 10-32 square nut zinc | 44 |
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| Weaver | WA | Square Nut | Steel | Plain | 1/4-20 | 1/4-20 square nut plain | 2475 |
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| Weaver | WA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 square nut 18-8 ss | 416 |
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| Weaver | WA | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 square nut zinc | 2100 |
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| Weaver | WA | Square Nut | Steel | Plain | 5/16-18 | 5/16-18 square nut plain | 14434 |
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| Weaver | WA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 square nut 18-8 ss | 33 |
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| Weaver | WA | Square Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 square nut zinc | 11679 |
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| Weaver | WA | Square Nut | Steel | Plain | 3/8-16 | 3/8-16 square nut plain | 2471 |
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| Weaver | WA | Square Nut | Steel | Zinc/Clear | 3/8-16 | 3/8-16 square nut zinc | 4346 |
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| Weaver | WA | Square Nut | Steel | Plain | 7/16-14 | 7/16-14 square nut plain | 206 |
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| Weaver | WA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 | 1/2-13 square nut 18-8 ss | 81 |
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| Weaver | WA | Square Nut | Steel | Zinc/Clear | 1/2-13 | 1/2-13 square nut zinc | 1005 |
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| Weaver | WA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/8-11 | 5/8-11 square nut 18-8 ss | 19 |
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| Weaver | WA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4-10 | 3/4-10 square nut 18-8 ss | 16 |
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| Weaver | WA | Square Nut | Steel | Zinc/Clear | 3/4-10 | 3/4-10 square nut zinc | 2800 |
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| Weaver | WA | Square Nut | Steel | Plain | 7/8-9 | 7/8-9 square nut plain | 48 |
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| Weaver | WA | Square Nut | Steel | Plain | 1 1/8-7 | 1 1/8-7 square nut plain | 82 |
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| Weaver | WA | Square Nut | Steel | Plain | 1 1/4-7 | 1 1/4-7 square nut plain | 63 |
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| Jay-Cee | MI | Square Nut | Steel | Phosphate | 5/16-18 | 5/16-18 square machine screw nut black phos | 34590 |
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| Set Screw | IL | Square Nut | Steel | Zinc/Yellow | 3/8-16 | (1 x3 x1/4) flat rectangular nut & plate | inquire |
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| ACCURATE | IL | Square Nut | Steel | Plain | 1 1/2-6 | 1 1/2-6 square nut regular plain | 33 |
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| ACCURATE | IL | Square Nut | Steel | Phosphate | 3/8 | c12009-014-4 .375 rectangular black phos (tinnerman type nut old# c13727-014-4) | 184 |
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| ACCURATE | IL | Square Nut | Steel | Plain | 5/16-18 | square nut regular | 1200 |
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| YANKEE | NH | Square Nut | Steel | Zinc/Clear | #10-24 | 10-24 square nut zinc pltd | 1164 |
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| YANKEE | NH | Square Nut | Brass | Plain | #10-32 | 10-32 square nut brass | 60 |
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| YANKEE | NH | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 square nut (7/16 acrflts) steel zinc plated | 312 |
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| YANKEE | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 square nut (7/16 wide) 18-8 stainless steel | 66 |
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| YANKEE | NH | Square Nut | Steel | Plain | 5/16-18 | 5/16-18 square nut (9/16 wide) plain steel | 99 |
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| YANKEE | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 | 3/8-16 square nut (5/8 wide) 18-8 stainless steel | 106 |
|
| YANKEE | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 | 1/2-13 square nut (13/16 wd x 7/16 ht) 18-8 stainless steel | 24 |
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| YANKEE | NH | Square Nut | Steel | Zinc/Clear | 3/4-10 | 3/4-10 square nut zinc pltd | 114 |
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| YANKEE | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 | 8-32 square nut stain steel | 100 |
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| YANKEE | NH | Square Nut | Steel | Zinc/Clear | M2-0.40 | m2(.4) square nut zinc pltd | 191 |
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| YANKEE | NH | Square Nut | Steel | Zinc/Clear | M8-1.25 | m8(1.25) square nut zinc pltd | 268 |
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| OneMonroe | NC | Square Nut | Steel | Zinc/Clear | M3-.5-0.50 | m3-.5 square nut stl znc din 562-4-1454-145 | 345 |
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| OneMonroe | NC | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 18-8 stainless steel square nut | 27 |
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| OneMonroe | NC | Square Nut | Steel | Galvanized | 3/8-16 | 3/8-16 hot dipped galvanized square nut | 2410 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 1/4-20 | 1/4-20 plain rectanguler spring nut (1903) | 2460 |
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| OneMonroe | NC | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 square nut 18.8 stainless steel | 1610 |
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| OneMonroe | NC | Square Nut | Steel | Zinc/Black | 1/4-20 | 1/4-20 square nut black zinc | 2000 |
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| OneMonroe | NC | Square Nut | Steel | Black Oxide | 1/4-20 | 1/4-20 square nut black ox | 150 |
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| OneMonroe | NC | Square Nut | Steel | Zinc/Clear | 1/2-13 | nut 1/2-13 regular square nut zinc 300/ctn | 10 |
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| OneMonroe | NC | Square Nut | Grade 8 | Plain | 9/16-18 | 9/16-18 square track nut gr 8 | 115 |
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| OneMonroe | NC | Square Nut | Steel | Zinc/Clear | 5/8-11 | 5/8-11 square nut plated | 105 |
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| OneMonroe | NC | Square Nut | Steel | Zinc/Clear | 5/8-11 | 5/8-11 square nut plated | 402 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 1/4 x 47/64 | 3/4-10 heavy square nut 1 1/4 x 47/64 stl | 74 |
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| OneMonroe | NC | Square Nut | Grade 8 | Plain | 3/4-16 | 3/4-16 square track nut gr 8 | 200 |
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| OneMonroe | NC | Square Nut | Grade 8 | Plain | 7/8-14 | 7/8-14 square track nut gr 8 | 200 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 5/16-18 | 5/16-18 plain finish square nut | 400 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 1/8-7 | 1 1/8-7 plain finish square nut | 54 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 1/2-6 | 1 1/2-6 plain finish square nut | 10 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 1/4-20 | 1/4-20 reg sq nut-pln | 3701 |
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| OneMonroe | NC | Square Nut | Steel | Plain | 5/8-11 | 5/8-11 reg sq nut-plain | 36 |
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| OneMonroe | NC | Square Nut | Steel | Galvanized | 5/8-11 | 5/8-11 reg sq nut-hot dip galv | 360 |
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| Jackson | MS | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 | 18-8 304 square nut square nut 18-8 304 | 75 |
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| American | NY | Square Nut | Steel | Plain | 1/2-13 | square nut | 10 |
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| American | NY | Squa re Nut | Steel | Zinc/Clear | 1/2-13 | square nut zp | 650 |
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| American | NY | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 square nut zp | 2000 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #8-32 | square nut zp | 100 |
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| American | NY | Square Nut | Steel | Plain | #12-24 | square nut | 9900 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #12-24 | square nut pl | 35500 |
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| American | NY | Square Nut | Steel | Zinc/Yellow | #3-56 | square nut | 28000 |
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| American | NY | Square Nut | Brass | Plain | #3-56 | square nut pl | 10000 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #5-40 | square nut zp | 68500 |
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| American | NY | Square Nut | Steel | Plain | #6-32 | square nut | 25700 |
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| American | NY | Square Nut | Steel | Plain | #6-40 | square nut | 1500 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #6-40 | square nut pl | 117000 |
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| American | NY | Square Nut | Steel | Plain | #8-32 | square nut | 57000 |
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| American | NY | Square Nut | Steel | Zinc/Yellow | #8-32 | square nut | 60000 |
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| American | NY | Square Nut | Steel | Plain | #8-32 | square nut black | 3000 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #8-36 | square nut zp | 80000 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #10-24 | square nut pl | 1000 |
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| American | NY | Square Nut | Steel | Plain | #10-24 | square nut | 26000 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #4-40 | square nut pl | 4100 |
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| American | NY | Square Nut | Steel | Zinc/Clear | #10-32 | square nut pl | 29590 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | M4-0.70 | m4-.7 square nut steel znc pltd (din 562) | 1590 |
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| Ababa | CA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M6-1.00 | m6-1.0 square nut (din 557) stainless steel | 30 |
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| Ababa | CA | Square Nut | Steel | Galvanized | 1-8 | 1-8 sq nut stl hdg b18.2.2 | 331 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 1-8 | 1-8 sq nut stl znc b18.2.2 | 10 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | #10-24 | 10-24 sq nut stl znc b18.2.2 | 3000 |
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| Ababa | CA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 | 10-32 sq nut s/s b18.2.2 | 1100 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | #10-32 | 10-32 sq nut stl znc b18.2.2 | 605 |
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| Ababa | CA | Square Nut | Steel | Plain | 1 1/8-7 | 1 1/8-7 sq nut stl pln b18.2.2 | 5 |
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| Ababa | CA | Square Nut | Steel | Plain | 1 1/4-7 | 1 1/4-7 sq nut stl pln b18.2.2 | 1 |
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| Ababa | CA | Square Nut | Steel | Plain | 1 1/2-6 | 1 1/2-6 sq nut stl pln b18.2.2 | 4 |
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| Ababa | CA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 sq nut s/s b18.2.2 | 10750 |
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| Ababa | CA | Square Nut | Steel | Galvanized | 1/4-20 | 1/4-20 sq nut stl hdg b18.2.2 | 74 |
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| Ababa | CA | Square Nut | Steel | Plain | 1/4-20 | 1/4-20 sq nut stl pln b18.2.2 | 4175 |
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| Ababa | CA | Square Nut | Steel | Black Oxide | 1/4-20 | 1/4-20 sq nut stl blk ox wax b18.2.2 | 978 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 sq nut stl znc b18.2.2 | 2798 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 sq nut chamfered one side stl znc b18.2.2 | 2700 |
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| Ababa | CA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 sq nut s/s b18.2.2 | 1684 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 sq nut stl znc b18.2.2 | 1200 |
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| Ababa | CA | Square Nut | Steel | Plain | 3/8-16 | 3/8-16 sq nut stl pln b18.2.2 | 1312 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 3/8-16 | 3/8-16 sq nut stl znc b18.2.2 | 50 |
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| Weaver | WA | Square Nut | Steel | Plain | 5-.8 | 5-.8 square nut plain | 175 |
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| Weaver | WA | Square Nut | Steel | Plain | #10-24 | 10-24 square nut plain | 364 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | #10-24 | 10-24 sq nut stl znc b18.2.2 | 100 |
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| Ababa | CA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 | 10-32 sq nut s/s b18.2.2 | 100 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | #10-32 | 10-32 sq nut stl znc b18.2.2 | 600 |
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| Ababa | CA | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 | 1/4-20 sq nut s/s b18.2.2 | 300 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 sq nut stl znc b18.2.2 | 91 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 sq nut chamfered one side stl znc b18.2.2 | 600 |
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| Ababa | CA | Square Nut | Steel | Plain | 3/8-16 | 3/8-16 sq nut stl pln b18.2.2 | 300 |
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| Ababa | CA | Square Nut | Steel | Plain | 1/2-13 | 1/2-13 sq nut stl pln b18.2.2 | 100 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | #5-40 | 5-40 sq nut stl znc b18.2.2 | 300 |
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| Ababa | CA | Square Nut | Steel | Plain | 5/8-11 | 5/8-11 sq nut stl pln b18.2.2 | 50 |
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| Ababa | CA | Square Nut | Steel | Zinc/Clear | #8-32 | 8-32 sq nut stl znc b18.2.2 | 100 |
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| Express | CA | Square Nut | Steel | Zinc/Clear | 1/2-13 | 1/2-13 square nuts zinc | 250 |
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| Express | CA | Square Nut | Steel | Zinc/Clear | 3/8-16 | 3/8-16 square nut zinc | 1490 |
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| SII | IN | Square Nut | Steel | Plain | 1-8 | 1-8 plain square nut b18.2.2 | 125 |
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| SII | IN | Square Nut | Grade 2 | Plain | 3/4-10 | 3/4-10 square nuts grade 2 plain b18.2.2 | 100 |
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| SII | IN | Square Nut | Grade A | Plain | 5/8-11 | 5/8-11 grade a plain finish steel regular square nut b18.2.2 | 46 |
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| RePneu To | MI | Square Nut | Grade 2 | Zinc/Clear | 1/4-20 | 1/4-20 square nuts grade 2 zinc | 5000 |
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| TSF | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 13/16 x 7/16 | square nut ss 1/2-13x13/16x7/16 | 75 |
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| B & K FAST | PA | Square Nut | Aluminum | Plain | 1/4-20 | 1/4-20 aluminum square nuts b18.2.2 | 500 |
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| B & K FAST | PA | Square Nut | Steel | Galvanized | 1/4-20 | 1/4-20 galv square nuts b18.2.2 | 29075 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 1/2-13 | 1/2-13 heavy square nuts plain b18.2.2 | 131 |
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| B & K FAST | PA | Square Nut | Grade 8 | Zinc/Yellow | 3/4-10 | 3/4-10 heavy square nut gr 8 zy b18.2.2 | 26 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 1-8 | 1-8 heavy square nuts plain b18.2.2 | 3 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 1 1/8-7 | 1 1/8-7 heavy square nuts plain b18.2.2 | 1 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 1 1/4 | 1 1/4 heavy square nuts plain b18.2.2 | 54 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 2-4 1/2 | 2-4 1/2 heavy square nuts plain b18.2.2 | 9 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 3/4-10 | 3/4-10 l.h. square nuts plain b18.2.2 | 298 |
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| B & K FAST | PA | Square Nut | Steel | Plain | #5-40 | 5/40 square nuts plain b18.2.2 | 3800 |
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| B & K FAST | PA | Square Nut | Steel | Zinc/Clear | #6-32 | 6/32 square nuts zinc b18.2.2 | 7177 |
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| B & K FAST | PA | S quare Nut | Steel | Zinc/Clear | #8-32 | 8/32 square nuts zinc b18.2.2 | 15200 |
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| B & K FAST | PA | Square Nut | Steel | Zinc/Clear | #10-24 | 10/24 square nuts zinc b18.2.2 | 19800 |
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| B & K FAST | PA | Square Nut | Steel | Zinc/Clear | #12-24 | 12/24 square nuts zinc b18.2.2 | 5914 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 1/4-20 | 1/4-20 square nuts plain b18.2.2 | 1200 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 5/16-18 | 5/16-18 square nuts plain b18.2.2 | 46832 |
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| B & K FAST | PA | Square Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 square nuts zinc b18.2.2 | 6105 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 3/8-16 | 3/8-16 square nuts plain b18.2.2 | 304 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 7/16-14 | 7/16-14 square nuts plain b18.2.2 | 26296 |
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| B & K FAST | PA | Square Nut | Steel | Plain | 1/2-13 | 1/2-13 square nuts plain b18.2.2 | 1583 |
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| Lubker Di | PA | Square Nut | Steel | Plain | 2 1/2-4 | 2 1/2-4 hvy square nut pln | 5 |
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| TSF | TX | Square Nut | Steel | Plain | 1-8 | square nut carbon steel plain 1-8 | 11 |
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| TSF | TX | Square Nut | Grade A | Plain | 5/16-18 | square heavy nut low carbon steel gr a plain 5/16-18 | 600 |
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