| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 0.640 INCHES MINIMUM AND 0.663 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.045 INCHES MINIMUM AND 1.071 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL THICKNESS | 0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND A GRADE AND 1 STYLE AND 1 COMPOSITION |
| STYLE DESIGNATOR | FLAT INTERNAL TEETH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |