| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.1900 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.297 INCHES MINIMUM AND |
| 0.327 INCHES MAXIMUM |
| FASTENER LENGTH | 0.485 INCHES MINIMUM AND |
| 0.515 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 301 OR |
| STEEL COMP 302 WASHER |
| STEEL CORROSION RESISTING SLEEVE |
| STEEL CORROSION RESISTING LOCKING FEATURE |
| STEEL CORROSION RESISTING SPRING |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059, COND A MIL SPEC ALL MATERIAL RESPONSES WASHER |
| AMS5640 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM A484 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE SLEEVE |
| MS35338 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE OR |
| ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 1600 POUNDS PER SQUARE INCH |
| HEAD STYLE | FILLISTER |
| HEAD DIAMETER | 0.285 INCHES MINIMUM AND |
| 0.315 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |
| FEATURES PROVIDED | FLAT WASHER AND |
| LOCK WASHER AND |
| SLEEVE |
| SPECIAL FEATURES | THE SLEEVE IS INTERNALLY THREADED WITH .250-28UNF-3B THREADING IN 3 PLACES. THE SLEEVE HAS EXTERNAL DIAMOND KNURLING BY THE HEAD OF THE FASTENER. |