| MATERIAL | STEEL COMP 302 AND |
| STEEL COMP 4140 OR |
| STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A 580 ASSN STD 1ST MATERIAL RESPONSE AND |
| MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR |
| AMS 6322 ASSN STD 3RD MATERIAL RESPONSE |
| SURFACE TREATMENT | PASSIVATE AND |
| CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND |
| QQ-P-416, TYPE 2, CLASS 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| STYLE DESIGNATOR | LOCKED IN |
| DISTANCE FROM END OF STUD END THREADS TO NUT END | 0.970 INCHES MINIMUM AND |
| 1.030 INCHES MAXIMUM |
| OVERALL LENGTH | 1.375 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNJC NUT THREAD |
| UNC STUD THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| 0.375 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| 2A STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| 16 STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.440 INCHES MINIMUM AND |
| 0.500 INCHES MAXIMUM NUT THREAD |
| 0.360 INCHES MINIMUM AND |
| 0.390 INCHES MAXIMUM STUD THREAD |
| LOCKING FEATURE | KEY INSERTS |
| SURFACE FINISH | 32.0 MICROINCHES NUT THD |
| 63.0 MICROINCHES SHANK |
| 63.0 MICROINCHES STUD THD |