About Flat Washer
Flat washers spread clamp load over a larger area so the fastener does not dent or sink into the workpiece. They do not lock — use spring, tooth or nylon-insert types for that.
Standards DIN 125 · DIN 9021 · ISO 7089 · ISO 7093
- Zinc-plated steel
- The low cost general purpose choice.
- 304 stainless
- Wet, outdoor and food service.
- 316 stainless
- Marine and chemical.
- Brass / copper
- Conductive, for terminals and earthing.
- Nylon
- Insulating and non-marring.
How to choose
- Sized as ID x OD x thickness; ID follows the screw thread size.
- Use the large-OD DIN 9021 on aluminium, plastic or timber.