3/8"-16 x 1-1/2" Hex Drive Cup Point Black Oxide or Plain Finish Alloy Steel Socket Set Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 1.50 INCHES NOMINAL NOMINAL THREAD DIAMETER: 16.0 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: MULTIPLE POINT SOCKET SET SCREW SPECIAL FEATURES: DIAMETER 0.375;DRIVE 0.187;BLACK OXIDE;CUP POINT;EXTENSIONS TOGETHER,STABILIZERS BEFORE THREAD SERIES DESIGNATOR: UNC