| FASTENER LENGTH | 0.126 INCHES MINIMUM AND 0.128 INCHES MAXIMUM |
| GRIP LENGTH | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM |
| HEAD HEIGHT | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM |
| HEAD STYLE | STRAIGHT PAN |
| HEAD MAJOR DIAMETER | 0.415 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
| LUBRICATION | CETYL ALCOHOL |
| NOMINAL THREAD SIZE | 0.2500 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | PIN,RIVET,THREADED,TENSION,PROTRUDING HEAD,HEXAGON POINT DRIVE |
| SHANK DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| 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 | UNIFIED NATIONAL JOINT FINE (UNJF) |