| FIRST FLAT LENGTH | 0.560 INCHES MINIMUM AND 0.590 INCHES MAXIMUM |
| FLAT HEIGHT | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 8630 OVERALL |
| OVERALL HEIGHT | 0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM |
| OVERALL LENGTH | 1.130 INCHES MINIMUM AND 1.150 INCHES MAXIMUM |
| OVERALL WIDTH | 0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM |
| STARTING EDGE SHAPE | STRAIGHT |
| STYLE DESIGNATOR | STEPPED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |