4-40 Stainless Socket Set Screw - Cup Point

#4-40 cup point socket set screws with USS coarse (UNC) thread, made from 18-8 stainless steel. We stock 1/8", 3/16", 1/4" lengths. They take a 0.050" hex key.

4-40 Stainless Socket Set Screw - Cup Point | The Nutty Company, Inc.

Specifications

Size: #4-40 (USS coarse)
Lengths: 1/8", 3/16", 1/4"
Hex key: 0.050"
Thread: USS coarse (UNC)
Drive: hex socket
Material: 18-8 stainless steel

Common Uses

Machinery and fixtures
Food and medical equipment
Marine equipment

FAQ

What does a cup point set screw do?
The cupped end digs into the shaft as it is tightened, holding a collar, pulley, gear or knob in place. Use a flat on the shaft for the best hold.

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.

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.