Nuts Back Grade-GT Lock Nut Flange Style Black Phosphate & Oil Tee Nuts Steel, Zinc Plated Two-Way Reversible Lock Nuts Finished Pattern Steel, Zinc Plated & Waxed Wing Nuts Cold Forged Steel, Zinc Plated Wing Nuts Stamped Steel Zinc Plated Size Size Size Size Size For use with Grade 8 Frame Bolts 3/8-16 1/2-13 5/8-11 3/4-10 Dia. x Barrel Length 10-24 X 5/16 10-24 X 5/16 10-32 X 5/16 10-32 X 5/16 1/4-20 X 5/16 1/4-20 X 5/l6 1/4-20 X 7/16 1/4-20 X 7/16 5/16-18 X 3/8 5/16-18 X 3/8 5/16-18 X 5/8 3/8-16 X 7/16 8-32 10-24 10-32 1/4-20 1/4-28 5/16-18 5/16-24 3/8-16 3/8-24 7/16-14 7/16-20 1/2-13 1/2-20 9/16-12 9/16-18 5/8-11 5/8-18 3/4-10 3/4-16 7/8-9 7/8-14 1-8 6-32 8-32 10-24 10-32 1/4-20 1/4-28 5/16-18 3/8-16 7/16-14 1/2-13 5/8-11 3/4-10 6-32 8-32 10-24 10-32 1/4-20 5/16-18 3/8-16