M20-2.5 x 120mm ISO 4762 Hex Drive Class 12.9 Black Oxide Finish Alloy Steel Socket Cap Screw / END ITEM IDENTIFICATION: BUFFALO PART NAME ASSIGNED BY CONTROLLING AGENCY: WASHER,FLAT SPECIAL FEATURES: 3/4 USS USS BOWMALLOY FLAT WASHERS, WASHER, FLAT, 3/4", MEDIUM CARBON STEEL BOWMALLOY, USS 1050-1060 RC 38-42C PER BOWMAN PRINT GOLD DICHROMATE & BAKE. UNITS PER PK = 50 BD ITEM 39757 MATERIAL: STEEL COMP 1050 OVERALL