Te-Co 41404 Black Oxide 1018 Steel T-Slot Nut, 3/8"-16 TPI, 1/2" Height x 11/16" Width x 7/16" Table Slot (Pack of 5)
Material is case hardened 1018 steel with black oxide finish. 3/8"-16 Thread. 7/16" Table slot. 7/8" Base size. Measures 1/2" width by 11/16" height.