| FASTENER LENGTH | 0.437 INCHES NOMINAL |
| FEATURES PROVIDED | LOCK WASHER |
| HEAD DIAMETER | 0.250 INCHES MINIMUM AND 0.262 INCHES MAXIMUM |
| HEAD HEIGHT | 0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM |
| HEAD STYLE | BUTTON |
| INTERNAL DRIVE STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | HEX HEAD SOCKET BUTTON HEAD CAPTIVE PANEL ASSEMBLY |
| MATERIAL ACCOMMODATED THICKNESS | 0.09375 INCHES NOMINAL |
| MATERIAL | STEEL PROPERTY CLASS 18.8 OVERALL |
| NOMINAL THREAD DIAMETER | 0.1380 INCHES |
| WIDTH ACROSS FLATS | 0.078 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | TYPE2 MFR REF 1ST TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD LENGTH | 0.1775 INCHES MINIMUM AND 0.1975 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |