4-40 x 7/8 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR DPG188 This makes them easy to

This makes them easy to drive into metal

while the 25mm length refers to the distance from the underside of the head to the tip of the screw

This 3/8-16 x 1 3/4 Phillips flat machine screw is fully threaded and made of steel with a zinc finish

Fender washers are often used in automotive applications

The screw is designed for use in wood and metal applications and is self-tapping

4-40 x 7/8 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR DPG188 This makes them easy to4 40 x 7 8 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S S DFAR is a high quality fastener designed for use in a variety of applications. It is made from 300 series stainless steel, which provides excellent corrosion resistance and strength. The screw has a full thread, which provides a secure hold in a variety of materials. The Phil flat head provides a flush, low profile finish. This screw is compliant with MS51959 and