Widely used in farming equipment, Class 10 Hex Nuts are intended for use with screws and bolts of property class 10.9 and lower. Made of steel with a max carbon content of 0.58%, min manganese content of 0.30%, max phosphorus content of 0.048%, and max sulfur content of 0.058%. Proof load for M20 nuts is 1060 N/mm sq. MHN24C10
