... M100(1/4-4inch) Features: 1.Flat washer,tapping washer and Spring washer Monel 400 K500 2.Standard: GB, ISO ... incolonel, hastelloy, monel, nimonic etc. 5. Grade: 4-10, A2, A4, A2-70, A4-80. 6. Hardness limit ... What else of Washers can we supply? 1Namecarbon steel washer,tapper washer2.standardUSS,SAE,FENDER, F436,DIN ( ... We have been engaged in the fasteners for 10 years.GOOD SERVICE:We will respond to ...