.266-.688 MS15795 Military Flat Washer 300 Series Stainless Steel DFAR Black Ox 3/8-16 NE It is designed to be

It is designed to be used with a washer to provide a secure and tight fit

This 4-40 x 5/16 Phillips pan internal sems machine screw is fully threaded and made of 18-8 stainless steel

It features a 1/4-14 thread size and a 5/8-inch length

It also has a wax coating

They feature a flat head design and ribbed exterior for a secure hold in thin materials

.266-.688 MS15795 Military Flat Washer 300 Series Stainless Steel DFAR Black Ox 3/8-16 NE It is designed to beThe . 266 . 688 MS15795 Military Flat Washer is a high strength, corrosion resistant washer designed to distribute the load of a fastener evenly over a surface. It is made of 300 series stainless steel and has a DFAR black oxide finish for added durability. The washer has an outer diameter of . 688 inches and an inner diameter of . 266 inches. It is . 063 inches thick. The washer is compliant with MS15795 military specifications and is commonly used