| THREAD SERIES DESIGNATOR | UNJF | 
| NOMINAL THREAD DIAMETER | 0.562 INCHES | 
| THREAD QUANTITY PER INCH | 18 | 
| THREAD CLASS | 3A | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD LENGTH | 0.732 INCHES MINIMUM AND | 
 | 0.815 INCHES MAXIMUM | 
| FASTENER LENGTH | 2.763 INCHES MINIMUM AND | 
 | 2.793 INCHES MAXIMUM | 
| MATERIAL | IRON ALLOY 660 OVERALL | 
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | 
| SURFACE TREATMENT | PASSIVATE BEARING SURFACE OF HEAD | 
 | CHROMIUM GRIP | 
 | PASSIVATE THREADS | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BEARING SURFACE OF HEAD | 
 | QQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE GRIP | 
 | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE THREADS | 
| MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH | 
| HEAD STYLE | DISHED HEXAGON | 
| HEAD HEIGHT | 0.312 INCHES MINIMUM AND | 
 | 0.327 INCHES MAXIMUM | 
| WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND | 
 | 0.940 INCHES MAXIMUM | 
| SHOULDER SHAPE | ROUND FIRST SHOULDER | 
| SHOULDER DIAMETER | 0.623 INCHES MINIMUM AND | 
 | 0.624 INCHES MAXIMUM FIRST SHOULDER | 
| SHOULDER LENGTH | 1.928 INCHES MINIMUM AND | 
 | 1.948 INCHES MAXIMUM FIRST SHOULDER | 
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.535 INCHES MINIMUM AND | 
 | 2.585 INCHES MAXIMUM FIRST HOLE | 
| SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM AND | 
 | 0.151 INCHES MAXIMUM FIRST HOLE | 
| SPECIAL FEATURES | 63.0 MICROINCH UNDERCUT |