| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.2590 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.2590 INCHES STUD THREAD |
| OVERALL LENGTH | 1.062 INCHES NOMINAL |
| SPECIAL FEATURES | NHA: AIRCRAFT ASSEMBLY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE2.CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD LENGTH | 0.438 INCHES NOMINAL NUT THREAD |
| THREAD LENGTH | 0.500 INCHES NOMINAL STUD THREAD |
| THREAD PITCH DIAMETERS | +0.2308/+0.2323 INCHES NUT THREAD |
| THREAD PITCH DIAMETERS | +0.2308/+0.2323 INCHES STUD THREAD |
| THREAD QUANTITY PER INCH | 20 STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJS STUD THREAD |