Regal Sales Corporation Manufacture & Supply ASTM F436 Washers in India, ASTM F436 Flat Washer Specification Covers Alloy and Stainless Steel Bolting in products such as High Pressure Flanges and High Pressure Pipe Fittings to get high temperature or high pressure & corrosion resistant steels durability and service. ASTM F436 Lock Washers and ASTM F436 Bevel Washers are manufactured from stainless steel, which has been quenched and tempered to enlarge the strength.