Stainless Square Nuts

18-8 stainless steel square nuts, with four flat sides that resist turning in slots and channels. We stock 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13.

Specifications

Material: 18-8 stainless steel
Sizes: 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13
Style: square nut
Thread: USS coarse (UNC)

Common Uses

Slots, channels and strut
Wood construction with carriage bolts
Restoration work

FAQ

Why use a square nut?
The flat sides won't turn in a slot or channel, and the larger bearing surface grips wood well.

How do I stop stainless threads from galling?
Stainless threads can seize (gall) when tightened fast or under heavy load. Put anti-seize on the threads, tighten slowly at low speed, keep the threads clean and don't overtighten.

Can I use stainless with zinc plated or galvanized parts?
Use stainless nuts and washers with stainless bolts and screws. In wet conditions, stainless touching zinc plated, galvanized or aluminum parts can cause galvanic corrosion of the zinc or aluminum.

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.