| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.269 INCHES MINIMUM AND |
| 0.305 INCHES MAXIMUM |
| FASTENER LENGTH | 3.460 INCHES NOMINAL |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | LCP77-1061,FSCM 36659 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
| SHOULDER DIAMETER | 0.6239 INCHES MINIMUM AND |
| 0.6244 INCHES MAXIMUM |
| SHOULDER LENGTH | 3.120 INCHES NOMINAL |
| CONCENTRIC HOLE DEPTH | 2.680 INCHES NOMINAL |
| CONCENTRIC HOLE DIAMETER | 0.374 INCHES MINIMUM AND |
| 0.381 INCHES MAXIMUM |
| HEAD STYLE | ROUND W/WRENCH FLATS |
| HEAD DIAMETER | 1.125 INCHES NOMINAL |
| HEAD HEIGHT | 0.125 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.875 INCHES NOMINAL |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.350 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.075 INCHES MINIMUM AND |
| 0.080 INCHES MAXIMUM FIRST HOLE |
| TEST DATA DOCUMENT | 36659-LCP72-1076 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| CRITICALITY CODE JUSTIFICATION | AAVH |