5/16-18 x 1/2 Serrated Hex Flanged Washer Full Thread Grade 8 w/Head Markings Zinc D985188 The screw has a 1/4-14

The screw has a 1/4-14 thread size and a 3/4-inch length

this washer resists corrosion and wear

They are made from steel and have a zinc plated finish for corrosion resistance

The Phillips drive provides a secure hold for your drill bit

With their Type 17 2/3 thread

5/16-18 x 1/2 Serrated Hex Flanged Washer Full Thread Grade 8 w/Head Markings Zinc D985188 The screw has a 1/4-14The 5 16 18 x 1 2 Serrated Hex Flanged Washer Full Thread Grade 8 with Head Markings Zinc is a high strength washer designed for use with bolts and screws. It is made of zinc plated steel and features a serrated flange that helps to prevent loosening. The full thread design allows for maximum holding power. The head markings indicate the grade of the washer, which is 8. This washer is commonly used in automotive, construction, and other industrial