5133-00-293-0853 (5133-00-293-0853)
NSN 5133-00-293-0853 (NIIN 00-293-0853) is a countersink in Federal Supply Class 5133, Drill Bits, Counterbores, And Countersinks: Hand And Machine — an angular cutting tool, usually made with angular relief, having one or more flutes with specific size angle cutting edges. Manufacturer part number 5133-00-293-0853 (Northwest Tool Corp, CAGE 4U395); also referenced as B94.2 (The American Society Of Mechanical); GGG-C-613 TY4CLASZ3/4 IN.DEG 60 (General Services Administration); GGG-C-613 (Federal Specifications Promulgated).
Key specs: 40 rockwell c minimum and 53 rockwell c maximum hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $19.58 gov standard price; export Schedule B 8205.10.0000.