1/4-28 x 1 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc 2 1/4-12 The wings on the screw

The wings on the screw head prevent it from spinning during installation

#10 Heavy Split Lock Washer Plain is a type of washer used to prevent nuts and bolts from loosening due to vibration or other forces

Their heavy hex heads provide ample grip for secure tightening

It is also suitable for use in outdoor environments where corrosion resistance is important

5 x 10 JISB 1111 Class 4

1/4-28 x 1 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc 2 1/4-12 The wings on the screw1 4 28 x 1 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc is a type of screw that has a hex head, a serrated flange washer, and a full thread. The hex head allows for easy driving with a wrench or socket, while the serrated flange washer helps to prevent the screw from loosening. The full thread provides a strong hold in a variety of materials. This screw is made of case hardened zinc, which gives it a durable finish and resistance to