| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD DIAMETER | 0.155 INCHES MINIMUM AND 0.181 INCHES MAXIMUM |
| HEAD HEIGHT | 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
| HEAD STYLE | PAN NO. 2 |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL | STEEL COMP 302 AND STEEL COMP 303 AND STEEL COMP 304 OVERALL |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW MACHINE |
| PRIMARY WASHER MATERIAL THICKNESS | 0.020 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.172 INCHES NOMINAL |
| PRIMARY WASHER STYLE | SPLIT HELICAL RING |
| SECONDARY WASHER MATERIAL THICKNESS | 0.035 INCHES NOMINAL |
| SECONDARY WASHER OUTSIDE DIAMETER | 0.220 INCHES NOMINAL |
| SECONDARY WASHER RELATIONSHIP TO PRIMARY WASHER | NOT IDENTICAL |
| SECONDARY WASHER STYLE | FLAT |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 56 |
| WASHER QUANTITY | 2 |