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#4 Square Nuts (ASME B18. 2.2)

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.

5 results, (click on any line for more information)

Buy Square Nuts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
EximS'poreSquare NutSteelZinc/Clear#4-408.407 x 6.350 x 2.489nut square steel blue zn #4-408.407 x 6.350 x 2.489 mm0.331 x 0.250 x 0.098 in (ansi std) b18.2.2305730
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Wink FastVASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-4018.8 (a2) 18-8 304 steel square nut 4-40 per asme/ansi b18.2.210237
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StandardMASquare Nut316, 317, A4 StainlessPlain#4-404/40 square nut 316 stainless steel b18.2.2121160
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StandardMASquare NutBrassPlain#4-404-40 square nut brass b18.2.219977
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Marine FastenersFLSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 square nut ss w/chamfer b18.2.277400
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