| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| CRITICALITY CODE JUSTIFICATION | FEAT |
| FASTENER LENGTH | 1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM |
| GRIP LENGTH | 0.880 INCHES MAXIMUM |
| HARDNESS RATING | 44.0 ROCKWELL C MINIMUM OVERALL AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.1195 INCHES NOMINAL |
| HEAD STYLE | COUNTERSUNK W/REVERSE CHAMFER |
| HEAD MAJOR DIAMETER | 0.5066 INCHES MAXIMUM |
| LUBRICATION | SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP XM-13 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 210000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| SHANK DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SPECIAL FEATURES | 0.138-32UNJC-3B THREADED CONCENTRIC HOLE ALONG THE LONGITUDINAL CENTERLINE OF HEAD END 0.300 IN. MIN,0.345 IN. MAX DP,0.120 IN. SLOT LG,0.060 IN. SLOT W LOCATED 0.610 IN. FROM TOP OF HEAD TO BEGINNING OF SLOT |
| WIDTH BETWEEN FLATS | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |