3/8" '800 Series' Flat Washer 18-8 Stainless Steel 100 pack serrated-flange-locknuts They come in a large

They come in a large variety of sizes and diameters

This serves to distribute the pressure of the nut over the part being secured

Part #13710T20SS-100

The serrations help in preventing the vibration of the nut from moving the fastener

Part # 201031C0200SS-100

3/8" '800 Series' Flat Washer 18-8 Stainless Steel 100 pack serrated-flange-locknuts They come in a largeNeed a large quantity? Request bulk pricing here. 3 8" '800 Series' Flat Washer 1" OD 18 8 Stainless Steel 100 pack A washer is a thin plate (typically disk shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut. Washers usually have an outer diameter (OD) about twice the width of their inner diameter (ID). Ideal for use in: Solar Panel Installation Glazing, Curtain