| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.324 INCHES NOMINAL |
| FASTENER LENGTH | 0.747 INCHES NOMINAL |
| MATERIAL | STEEL COMP 301 WASHER |
| STEEL CORROSION RESISTING LOCKING FEATURE |
| STEEL CORROSION RESISTING BEARING SURFACE OF HEAD |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059,301 MIL SPEC SINGLE MATERIAL RESPONSE WASHER |
| MS-35338,FS66 MIL STD SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| ASTM A484,300 SERIES ASSN STD SINGLE MATERIAL RESPONSE BEARING SURFACE OF HEAD |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| HEAD HEIGHT | 0.163 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.309 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 0.365 INCHES NOMINAL |
| EXTENDED WASHER THICKNESS | 0.051 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL ACCOMMODATED THICKNESS | 0.126 INCHES MINIMUM AND |
| 0.187 INCHES MAXIMUM |
| FEATURES PROVIDED | FLAT WASHER AND |
| LOCK WASHER |
| SPECIAL FEATURES | FLOATING ASSY FEATURES TWO FLAT WASHERS ALONG WITH ONE LOCKWASHER; REFER TO DOCUMENT FT1080 FOR ADDITIONAL DETAILS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | CAPTIVE SCREW,HEX HD,LOW PROFILE,SELF-LOCKING |