| EXTENDED WASHER DIAMETER | 0.384 INCHES MINIMUM AND 0.414 INCHES MAXIMUM |
| FASTENER LENGTH | 0.500 INCHES NOMINAL |
| FEATURES PROVIDED | LOCK WASHER |
| HEAD HEIGHT | 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| HEAD STYLE | CHAMFER FLANGE |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL | STEEL COMP 302 OVERALL |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW HEX WITH SERRATED FLANGED LOCKING HEAD |
| PRIMARY WASHER MATERIAL THICKNESS | 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.322 INCHES MINIMUM AND 0.348 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 32 |
| WASHER QUANTITY | 1 |
| WIDTH ACROSS FLATS | 0.310 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |