| DISTANCE FROM END OF STUD END THREADS TO NUT END | 0.845 INCHES MINIMUM AND 0.905 INCHES MAXIMUM |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | KEY INSERTS |
| OVERALL LENGTH | 1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| STYLE DESIGNATOR | LOCKED IN |
| SURFACE FINISH | 32.0 MICROINCHES NUT THD |
| SURFACE FINISH | 63.0 MICROINCHES STUD THD |
| SURFACE FINISH | 63.0 MICROINCHES SHANK |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2A STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM STUD THREAD |
| THREAD LENGTH | 0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |