| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.570 INCHES MINIMUM AND 1.590 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 7456 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL |
| NOMINAL THREAD SIZE | 0.312 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.312 INCHES STUD THREAD |
| SPECIAL FEATURES | LOK THD ON 60 PCT OF STUD END THD AND 0.062 IN. LG 0.253 IN. DZA THD RELIEF BETWEEN NUT AND STUD THDS AND 0.247 IN. DIA 0.060 IN. LG PILOT LOCATED ON STUD END |
| SURFACE FINISH | 63.0 MICROINCHES OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD CLASS | 2A STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD LENGTH | 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM STUD THREAD |
| THREAD LENGTH | 0.680 INCHES MINIMUM AND 0.700 INCHES MAXIMUM NUT THREAD |
| THREAD QUANTITY PER INCH | 18 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNC STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |