Nuts by APM Hexseal
HEX SEAL NUT 3/4" STEEL 1/2-13
HEX SEAL NUT 7/16" STEEL 1/4-28
HEX SEAL NUT 3/8" STEEL 10-32
HEX SEAL NUT 1/2" STEEL 5/8-18
HEX SEAL NUT 11/16" STEEL 7/16