Stainless Socket Head Cap Screws (USS) Coarse
Stainless Socket Head Cap Screws (USS) Coarse
18-8 stainless steel socket head cap screws in USS coarse (UNC) thread, from #2-56 to 3/4-10, in lengths from 3/16" to 6". A tall cylindrical head with a hex socket, the strongest socket screw. The head fits a counterbored hole. Choose a size below.
Specifications
- Material: 18-8 stainless steel
- Thread: USS coarse (UNC)
- Drive: hex socket (Allen)
- Sizes: #2-56, #4-40, #6-32, #8-32, #10-24, 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13, 5/8-11, 3/4-10
- Lengths: 3/16" to 6"
Common Uses
- Food, medical and lab equipment
- Machinery and fixtures
- Marine and outdoor equipment
FAQ
What hex key fits these screws?
The hex key (Allen wrench) size is listed in the specifications for each size on this page.
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.
What do USS coarse and SAE fine thread mean?
USS (UNC) coarse thread has fewer threads per inch and is the general purpose standard; it goes together fast and is less likely to cross thread. SAE (UNF) fine thread has more threads per inch for finer adjustment and better hold under vibration. The nut must match the thread.
Related: Stainless Socket Head Cap Screws SAE | Stainless Socket Screw Assortments | All Stainless Socket Screws
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