Austenitic Corrosion-Resistant Steel screws can be manufactured from Type 304 (UNS S30400), Type 304L (UNS S30403), Type 305 (UNS S30500), Type 316 (UNS S31600), Type 316L CRES (UNS S31603).Passivated in accordance with QQ-P-35. The minimum tensile strength in load pounds, indicated in Table I is based on 80,000 PSI Minimum Tensile Strength for diameters through .625 inch and 70,000 PSI Minimum Tensile Strength for diameters over .625 inch. The yield strength, based on .2 percent offset, shall be 30,000 psi minimum. The minimum hardness shall be HRB 80 for diameters through .625 inch and HRB 74 for diameters over .625 inch. Screw threads shall be Unified external threads Class 2A UNC in accordance with FED-STD-H28/2. Acceptability of screw threads shall be in accordance with FED-STD-H28/20. Passivate per QQ-P-35.