#6 External Tooth Lock Washer Black Oxide 5/16-18-2B This 12-24 square machine screw

This 12-24 square machine screw nut is made of zinc-plated steel for durability and corrosion resistance

and it provides a strong and secure connection

It is a non-A307 screw

1/2-20 x 3 1/2 Hex Tap Bolt Grade 8 Fully Threaded Zinc Yellow is a high-strength fastener designed for demanding applications

#6 External Tooth Lock Washer Black Oxide 5/16-18-2B This 12-24 square machine screw#6 External Tooth Lock Washer Black Oxide is a hardened steel washer with teeth on its outer diameter. It is designed to be used under the head of a bolt or nut to prevent loosening due to vibration or other forces. The teeth bite into the surface of the mating part, creating a secure hold. This washer is ideal for use in applications where high levels of vibration are present, such as in automotive and industrial machinery. Its black oxide finish