| EXTENDED WASHER THICKNESS | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| FASTENER LENGTH | 2.750 INCHES NOMINAL |
| HEAD HEIGHT | 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| INTERNAL DRIVE STYLE | SLOT |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,MACHINE |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SCREW MATERIAL | STEEL CORROSION RESISTING |
| SCREW SURFACE TREATMENT | PASSIVATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OR ASTM A967,TYPE II ASSN STD SINGLE TREATMENT RESPONSE |
| WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNF |