| FASTENER LENGTH | 1.50 INCHES NOMINAL |
| HEAD DIAMETER | 0.594 INCHES MINIMUM AND 0.615 INCHES MAXIMUM |
| HEAD STYLE | PAN NO. 2 |
| INTERNAL DRIVE STYLE | TORX |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCR, PAN, TRX |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.31 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.063 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.875 INCHES NOMINAL |
| PRIMARY WASHER STYLE | FLAT |
| SECONDARY WASHER MATERIAL THICKNESS | 0.078 INCHES NOMINAL |
| SECONDARY WASHER STYLE | SPLIT HELICAL RING |
| SECONDARY WASHER OUTSIDE DIAMETER | 0.583 INCHES NOMINAL |
| SECONDARY WASHER RELATIONSHIP TO PRIMARY WASHER | NOT IDENTICAL |
| SPLINE MAJOR DIAMETER | 0.262 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WASHER QUANTITY | 2 |