1/2"-13 Thread 3/4" Slot 1-1/4"L x 3/4"H T-Slot Nut / THREAD DIRECTION: RIGHT-HAND PLATE THICKNESS: 0.750 INCHES NOMINAL THREAD SERIES: UNC THREAD QUANTITY PER INCH: 13 NOMINAL THREAD SIZE: 0.500 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: T-SLOT NUT MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL