M8-1.25 x 20mm DIN 933 A2-70 Stainless Steel Hex Cap Screw / THREAD LENGTH: 20.00 MILLIMETERS NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 5.30 MILLIMETERS NOMINAL WIDTH BETWEEN FLATS: 12.865 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: 3930-01-641-7505 PART NAME ASSIGNED BY CONTROLLING AGENCY: HEX HEAD CAP SCREW SPECIAL FEATURES: LENGTH: 25.30 MM; BODY LENGTH: 20.00 MM; CLASS: A2; MATERIAL: STEEL CORROSION RESISTING OVERALL