5/16 x .032 NAS1149 Military Flat Washer 18-8 Stainless Steel DFAR 7DPRWD1 They feature a square drive

They feature a square drive head for easy driving

The screw is fully threaded for maximum holding power and has a length of 5/8 inches

and the self-drilling feature eliminates the need for pre-drilling

It is 2 1/4 inches long and has a diameter of 1/4 inch

5/16 x .032 NAS1149 Military Flat Washer 18-8 Stainless Steel DFAR 7DPRWD1 They feature a square driveThe 5 16 x . 032 NAS1149 Military Flat Washer is a thin, round, metal washer with a 5 16 inch inner diameter and a . 032 inch thickness. It is made of 18 8 stainless steel, which is highly resistant to corrosion and rust. The washer is designed to be used with a 5 16 inch bolt or screw, and it helps to distribute the load of the fastener over a larger area, preventing damage to the material being fastened. The washer also helps to prevent the fastener