| HARDNESS RATING | 44.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| HEAT TREATMENT | ANNEALED |
| HOLE DIAMETER | 0.535 INCHES MINIMUM AND 0.545 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.000 INCHES NOMINAL |
| OVERALL HEIGHT | 0.143 INCHES MINIMUM AND 0.154 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-1213 MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-777 FED STD 1ST MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.126 INCHES MINIMUM AND 0.136 INCHES MAXIMUM |
| MATERIAL | STEEL COMP B OR STEEL COMP 1050 OR STEEL COMP 1065 OVERALL |
| STYLE DESIGNATOR | SPRING TENSION |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE Z CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-A-3150 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |