E-Klips Decking Nuts Threaded Rod size M8. Nut width 25mm - 19mm. Nut depth 12mm. Nut height 13mm. Load 100Kg. Finish, electroplated zinc, generally 8-12 microns thick with chromate coating, approximately 72 hours salt spray resistance ASTM-B117-90, DIN 50021, suitable for indoor, non-corrosive environments.