2-56 x 1/8 MS51957, NAS-1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S/S DFAR 1/4" This washer is designed to

This washer is designed to be used with #4 screws or bolts

and a coarse thread pitch of 16 threads per inch

The zinc coating provides resistance to corrosion and rust

and it has a coarse thread that provides a secure hold in a variety of materials

It is a drilled fillister head screw with a coarse thread and is manufactured from 300 series stainless steel

2-56 x 1/8 MS51957, NAS-1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S/S DFAR 1/4" This washer is designed to**2 56 x 1 8 MS51957, NAS 1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S S DFAR** This screw is made of 300 series stainless steel and has a diameter of 2 56 and a length of 1 8 inch. It has a coarse full thread and a Phillips pan head. It meets the specifications of MS51957 and NAS 1635 and is compliant with the Defense Federal Acquisition Regulation Supplement (DFARS).