| MATERIAL | STEEL COMP 4130 |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYLE DESIGNATOR | LOCKED IN |
| DISTANCE FROM SERRATED PORTION TO NUT END | 0.985 INCHES MINIMUM AND |
| 1.015 INCHES MAXIMUM |
| DISTANCE FROM SERRATED PORTION TO STUD END | 0.545 INCHES MINIMUM AND |
| 0.575 INCHES MAXIMUM |
| DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD | 0.140 INCHES MINIMUM AND |
| 0.200 INCHES MAXIMUM |
| OVERALL LENGTH | 1.530 INCHES MINIMUM AND |
| 1.590 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD PITCH DIAMETERS | 0.2778 TO 0.2795 INCHES STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.485 INCHES MINIMUM AND |
| 0.515 INCHES MAXIMUM NUT THREAD |
| 0.375 INCHES MINIMUM AND |
| 0.405 INCHES MAXIMUM STUD THREAD |
| LOCKING FEATURE | RING, LOCK SERRATED |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM |
| DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END | 0.145 INCHES MINIMUM AND |
| 0.175 INCHES MAXIMUM FIRST HOLE |
| COTTER PIN HOLE DIAMETER | 0.076 INCHES NOMINAL FIRST HOLE |
| SURFACE FINISH | 32.0 MICROINCHES NUT THD |
| SERRATION QUANTITY | 17 |
| SERRATION INCLUDED ANGLE | 86.0 DEGREES NOMINAL |