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Square Nut (DIN 557)
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.
0 Square Nut (din 557), 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 | |
| OneMonroe | MN | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #10-24 | 10-24 square nut-s.s. | 25 |
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| MAINSOURC | NH | Square Nut | Steel | Plain / Furnace Black | 5/16-18 | square nut stl | 600 |
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| MAINSOURC | NH | Square Nut | Steel | Plain / Furnace Black | 5/16-18 | square nut stl z/clr | 1427 |
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| TownCountry | AR | Square Nut | Steel | Plain / Furnace Black | 3/8-16 | square nut | 16000 |
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| Endries | WI | Square Nut | Steel | Zinc/Clear | 1/4-20 | 1/4-20 square nut zinc | 1000 |
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| Endries | WI | Square Nut | Phosphate | #8-32 | 8-32 flat rectangular speed nut phos & oil | 10000 |
| |
| Endries | WI | Square Nut | Grade 5 | Zinc/Clear | 3/4-10 | 3/4-10 gr5 heavy square nut zinc | 453 |
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| Endries | WI | Square Nut | Steel | Zinc/Clear | #10-32 | 10-32 square machine nut .0002 trivalent clear zinc | 1500 |
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| Endries | WI | Square Nut | Steel | Zinc/Clear | 3/8-16 | 3/8-16 square nut trivalent clear zinc | 300 |
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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 | Steel | Zinc/Clear | 3/8-24 | square nut pl | 900 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | 5/8-11 | square nut | 125 |
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| American | NY | Square Nut | Steel | Zinc/Clear | 3/8-16 | square nut pl | 1800 |
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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 | Zinc/Clear | #8-36 | square nut zp | 80000 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | #6-32 | square nut | 25700 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | #10-24 | square nut | 25500 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | 7/8-9 | square nut black | 500 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | 1 5/8 | square nut | 750 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | #8-32 | square nut | 57000 |
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| American | NY | Square Nut | Brass | Plain / Furnace Black | #3-56 | square nut pl | 10000 |
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| American | NY | Square Nut | Steel | Galvanized | 7/8-9 | square nut hdg | 200 |
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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 / Furnace Black | #8-32 | square nut black | 3000 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | 3/8-16 | square nut | 10000 |
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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/Yellow | #8-32 | square nut | 60000 |
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| American | NY | Square Nut | Steel | Plain / Furnace Black | 5/16-18 x 9/16 x 7/32 | square nut | 566 |
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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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| 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 / Furnace Black | 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 / Furnace Black | 5/16-18 | square nut regular | 1200 |
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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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| S+S Faste | OH | Square Nut | Steel | Zinc/Clear | M6-1.60 | m6 x 1.0 square nut zinc dnn 557 | 200 |
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| S+S Faste | OH | Square Nut | Plain / Furnace Black | 1 1/8-7 | 1 1/8-7 square nut | 61 |
| |
| S+S Faste | OH | Square Nut | Steel | Zinc/Clear | 3/4-10 | 3/4-10 reg square nut zinc | 300 |
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| S+S Faste | OH | Square Nut | Plain / Furnace Black | 5/16-18 | 5/16-18 square nut plain | 2750 |
| |
| S+S Faste | OH | Square Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 square nut zinc | 2200 |
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| S+S Faste | OH | Square Nut | Plain / Furnace Black | 5/8-11 | 5/8-11 reg square nut plain | 211 |
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| S+S Faste | OH | Square Nut | Steel | Zinc/Clear | #6-32 | 6-32 square machine nut zinc | 4124 |
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| S+S Faste | OH | Square Nut | Steel | Zinc/Clear | #8-32 | 8-32 square machine sc nut zinc | 200 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/4 x 6 1/2 | 3/4x6 1/2 t-o sb w/fin & sq nt b18.2.2 | 1164 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 1/4-20 | 1/4-20 square nut a563 a plain finish b18.2.2 | 54 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 5/16 | 5/16nc plain square nut 321032 b18.2.2 | 152 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/8-16 | 3/8-16 square nut plain b18.2.2 | 900 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/8-16 | 3/8-16 square nut plain b18.2.2 | 186 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/8-16 | 3/8-16 square nut plain b18.2.2 | 704 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 1/2-13 | 1/2-13 square nut plain b18.2.2 | 40 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 1/2-13 | 1/2-13 square nut plain b18.2.2 | 3000 |
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| QFC | TX | Square Nut | Grade 5 | Plain / Furnace Black | 1/2-13 | 1/2-13 hvy square nut grade 5 plain b18.2.2 | 36 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 1/2-13 | 1/2-13 sq nut overtapped .021 plain b18.2.2 | 490 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/4-10 | 3/4-10 square nut plain tap oversized b18.2.2 | 203 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/4-10 | 3/4-10 square nut plain tap oversized b18.2.2 | 601 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 3/4-10 | 3/4-10 square nut plain tap oversized b18.2.2 | 1410 |
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| QFC | TX | Square Nut | Steel | Plain / Furnace Black | 1-8 | 1-8 square nut plain b18.2.2 | 25 |
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| QFC | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #10-24 | 10-24 square nut 304 18-8 304 steel b18.2.2 | 216 |
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| QFC | TX | Square Nut | Steel | Zinc/Clear | 5/16-18 | 5/16-18 square nut zinc b18.2.2 | 5430 |
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| QFC | TX | Square Nut | Steel | Galvanized | 1/2-13 | 1/2-13 square nut galvanized b18.2.2 | 746 |
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| QFC | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 1/2-13 | 1/2-13 square nut 18-8 s/s b18.2.2 | 5935 |
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| QFC | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 1/2-13 | 1/2-13 square nut 18-8 s/s b18.2.2 | 386 |
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| QFC | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 1/2-13 | 1/2-13 square nut 18-8 s/s domestic b18.2.2 | 230 |
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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 / Furnace Black | #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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 3/8-16 | 3/8-16 square nut (5/8 wide) 18-8 stainless steel | 106 |
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| YANKEE | NH | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 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 / Furnace Black | #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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| METRO IND | OH | Square Nut | Steel | Zinc/Clear | M10 | m10 square nut steel zinc din 557 | 700 |
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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 | MN | Square Nut | Steel | Plain / Furnace Black | #10-32 | 10-32 4 proj sq unpiloted nut steel/plain | 474 |
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| OneMonroe | MN | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #10-24 | 10-24 square nut-s.s. | 25 |
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| Jackson | MS | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | #10-32 | 18-8 304 square nut square nut 18-8 304 | 75 |
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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 / Furnace Black | 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 / Furnace Black | #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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 5-.8 | 5-.8 square nut plain | 175 |
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| Weaver | WA | Square Nut | Steel | Plain / Furnace Black | #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 / Furnace Black | #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 / Furnace Black | 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 / Furnace Black | 3/8-16 | 3/8-16 sq nut stl pln b18.2.2 | 300 |
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| Ababa | CA | Square Nut | Steel | Plain / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 1-8 | 1-8 plain square nut b18.2.2 | 125 |
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| SII | IN | Square Nut | Grade 2 | Plain / Furnace Black | 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 / Furnace Black | 5/8-11 | 5/8-11 grade a plain finish steel regular square nut b18.2.2 | 46 |
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| TSF | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 1/2-13 x 13/16 x 7/16 | square nut ss 1/2-13x13/16x7/16 | 75 |
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| TSF | TX | Square Nut | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 1-8 | 1-8 heavy square nuts plain b18.2.2 | 3 |
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| B & K FAST | PA | Square Nut | Steel | Plain / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | #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 | Square 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 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 / Furnace Black | 1/2-13 | 1/2-13 square nuts plain b18.2.2 | 1583 |
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| Lubker Di | PA | Square Nut | Steel | Plain / Furnace Black | 2 1/2-4 | 2 1/2-4 hvy square nut pln | 5 |
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| TSF | TX | Square Nut | Steel | Plain / Furnace Black | 1-8 | square nut carbon steel plain 1-8 | 11 |
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