| CRITICALITY CODE JUSTIFICATION | FEAT |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.683 INCHES MINIMUM AND 1.708 INCHES MAXIMUM |
| GRIP LENGTH | 1.302 INCHES MINIMUM AND 1.317 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.522 INCHES MAXIMUM |
| LUBRICATION | CETYL ALCOHOL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP E4340 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.3125 INCHES |
| SPECIAL FEATURES | 0.138-32UNJC-3B THREADED CONCENTRIC HOLE ALONG THE LONGITUDINAL CENTERLINE OF HEAD END 0890 IN. MIN,0.910 IN. MAX DP,0.120 IN. SLOT LG,0.060 IN. SLOT W LOCATED 0.780 IN. FROM TOP OF HEAD TO BEGINNING OF SLOT |
| SHANK DIAMETER | 0.3547 INCHES NOMINAL |
| SHANK STYLE | PIN-RIVET, TAPERED, THREADED |
| SHEAR STRENGTH | 108000 SINGLE POUNDS PER SQUARE INCH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNJF |
| TIP DIAMETER | 0.3306 INCHES NOMINAL |