Square Nuts

Square nuts give you more wrench bite than hex when clearances are tight or your hands are oily. Run Grade 2 coarse thread for general repairs and fixtures. Choose plain finish for dry indoor jobs, go zinc plated when you need extra corrosion resistance on equipment, racks and enclosures. We keep both ready to ship.

14 results

Grade 2 Plain Finish Square Nuts - Coarse Thread (USS)

Grade 2 Zinc Plated Square Nuts - Coarse Thread (USS)

Grade 2 Plain Finish Square Nuts - Coarse Thread (USS)

Grade 2 plain steel square nuts with coarse USS threads, available in common diameters. Square profile provides secure wrenching and increased bearing surface, helping resist rotation and distribute load. Suited for structural and machinery fastening applications.

Diameter	Thickness	Thread Size	Thread Type	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4"	7/32"	1/4"-20	Coarse	50	348204	Log in to view price
1/4"-20 Grade 2 (USS) Plain Square Nut - 50 Pack Item #: 348204 Package Weight: 0.4 lbs View Product Details Log in to Order
5/16"	17/64"	5/16"-18	Coarse	50	348205	Log in to view price
5/16"-18 Grade 2 (USS) Plain Square Nut - 50 Pack Item #: 348205 Package Weight: 0.8 lbs View Product Details Log in to Order
3/8"	21/64"	3/8"-16	Coarse	50	348206	Log in to view price
3/8"-16 Grade 2 (USS) Plain Square Nut - 50 Pack Item #: 348206 Package Weight: 1.2 lbs View Product Details Log in to Order
7/16"	3/8"	7/16"-14	Coarse	25	348207	Log in to view price
7/16"-14 Grade 2 (USS) Plain Square Nut - 25 Pack Item #: 348207 Package Weight: 1 lbs View Product Details Log in to Order
1/2"	7/16"	1/2"-13	Coarse	25	348208	Log in to view price
1/2"-13 Grade 2 (USS) Plain Square Nut - 25 Pack Item #: 348208 Package Weight: 1.4 lbs View Product Details Log in to Order
5/8"	35/64"	5/8"-11	Coarse	10	348210	Log in to view price
5/8"-11 Grade 2 (USS) Plain Square Nut - 10 Pack Item #: 348210 Package Weight: 1 lbs View Product Details Log in to Order
3/4"	21/32"	3/4"-10	Coarse	10	348212	Log in to view price
3/4"-10 Grade 2 (USS) Plain Square Nut - 10 Pack Item #: 348212 Package Weight: 1.4 lbs View Product Details Log in to Order

Grade 2 Zinc Plated Square Nuts - Coarse Thread (USS)

Grade 2 square nuts made from steel with a zinc-plated finish and USS coarse threads. The square head provides a more secure grip for tightening and zinc plating resists corrosion better than bare steel. Suitable for general fastening applications where simple, durable hardware is needed.

Diameter	Thickness	Thread Size	Thread Type	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4"	7/32"	1/4"-20	Coarse	50	348004	Log in to view price
1/4"-20 Grade 2 (USS) Square Nut - 50 Pack Item #: 348004 Package Weight: 0.4 lbs View Product Details Log in to Order
5/16"	17/64"	5/16"-18	Coarse	50	348005	Log in to view price
5/16"-18 Grade 2 (USS) Square Nut - 50 Pack Item #: 348005 Package Weight: 0.8 lbs View Product Details Log in to Order
3/8"	21/64"	3/8"-16	Coarse	50	348006	Log in to view price
3/8"-16 Grade 2 (USS) Square Nut - 50 Pack Item #: 348006 Package Weight: 1.2 lbs View Product Details Log in to Order
7/16"	3/8"	7/16"-14	Coarse	25	348007	Log in to view price
7/16"-14 Grade 2 (USS) Square Nut - 25 Pack Item #: 348007 Package Weight: 1 lbs View Product Details Log in to Order
1/2"	7/16"	1/2"-13	Coarse	25	348008	Log in to view price
1/2"-13 Grade 2 (USS) Square Nut - 25 Pack Item #: 348008 Package Weight: 1.3 lbs View Product Details Log in to Order
5/8"	35/64"	5/8"-11	Coarse	10	348010	Log in to view price
5/8"-11 Grade 2 (USS) Square Nut - 10 Pack Item #: 348010 Package Weight: 1 lbs View Product Details Log in to Order
3/4"	21/32"	3/4"-10	Coarse	10	348012	Log in to view price
3/4"-10 Grade 2 (USS) Square Nut - 10 Pack Item #: 348012 Package Weight: 1.4 lbs View Product Details Log in to Order