5/16-18 x 3/8 Serrated Hex Flanged Washer Full Thread Screw 18-8 Stainless Steel BTU and fully threaded plain means

and fully threaded plain means that the bolt has threads along its entire length

It features an un-slotted indented hex washer head that provides a secure hold and prevents the screw from loosening over time

These screws are zinc-plated for corrosion resistance and have a length of 7/8 inches

meaning they have a diameter of 10-16 inches and a length of 1 inch

These lock washers are manufactured in the USA and meet all applicable industry standards

5/16-18 x 3/8 Serrated Hex Flanged Washer Full Thread Screw 18-8 Stainless Steel BTU and fully threaded plain meansThis 5 16 18 x 3 8 Serrated Hex Flanged Washer Full Thread Screw is made of 18 8 stainless steel, making it resistant to corrosion and rust. It has a serrated hex flange head that provides a secure grip when tightening, and a full thread that provides maximum holding power. This screw is ideal for use in a variety of applications, including metal, wood, and plastic.