M12-1.75 Low Carbon Steel DIN 316 Wing Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 34.7 MILLIMETERS NOMINAL FASTENER LENGTH: 40.0 MILLIMETERS NOMINAL HEAD STYLE: C87 WING NO. 2 HEAD HEIGHT: 31.0 MILLIMETERS MINIMUM AND 33.5 MILLIMETERS MAXIMUM WIDTH BETWEEN FLATS: 62.0 MILLIMETERS MINIMUM AND 65.0 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D21 W/O INTERNAL DRIVE END ITEM IDENTIFICATION: 2320-01-652-5208 NOMINAL THREAD DIAMETER: 12.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 1.75 PART NAME ASSIGNED BY CONTROLLING AGENCY: SCR, WING MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: M