Bigboltnut are the manufacturers, exporter and suppliers of standard washers in India. Washer are used in the heavy industry, marine, ship building, oil and wind energy, Bridges etc. Washer, machine component that is used in conjunction with a screw fastener such as a bolt and nut and that usually serves either to keep the screw from loosening or to distribute the load from the nut or bolt head over a larger area. For load distribution, thin flat rings of soft steel are usual. Popular grades include MS, HV 100, HV 200, HV 300, SS304, SS316 etc. The washer dimension for these are mentioned in the International standard ISO 7089. we are exporting these washer to many countries like USA, Europe and middle east. We also distribute and market the following products in alloy steel, carbon steel and stainless steel grades for the following products in ISO 7089, DIN 125, IS 2016 & Dast 021.