#4 Lock Washer (5)

In stock
SKU: HCW04 Barcode: 23848467
Regular price $ 0.35 USD

#4 Lock Washer (5)

The washer size to be used with a particular screw size is determined by the first number in the screw size.

For example, a 4-40 machine screw and a #4 sheet metal have about the same major thread diameter and require a #4 washer, flat or lock.