8-32 x 2 1/2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR 1/2 They have an indented hex

They have an indented hex washer head and a sharp point

vibration-resistant threads in metal materials

The screw's 2 1/2-inch length ensures a strong hold

They are also often used in automotive and marine applications

while the gimlet point allows for easy penetration and reduces the need for pre-drilling

8-32 x 2 1/2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR 1/2 They have an indented hex8 32 x 2 1 2 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 full thread design allows for maximum holding power, and the phil flat head provides a flush, low profile finish. This screw meets the requirements of MS51959 and NASM51959, and is DFAR