| FASTENER LENGTH | 1.125 INCHES NOMINAL |
| HARDNESS RATING | 95.0 ROCKWELL B MINIMUM OVERALL |
| HEAD HEIGHT | 0.233 INCHES MINIMUM AND 0.267 INCHES MAXIMUM |
| HEAD STYLE | TEE NO. 1 |
| HEAD LENGTH | 0.609 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| NONDEFINITIVE SPEC/STD DATA | 5 TYPE |
| WIDTH BETWEEN FLATS | 0.307 INCHES MINIMUM AND 0.342 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.875 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNC |