| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.182 INCHES MINIMUM AND |
| 0.192 INCHES MAXIMUM |
| FASTENER LENGTH | 0.604 INCHES MINIMUM AND |
| 0.614 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 301 PRIMARY WASHER |
| STEEL COMP 302 SPRING |
| STEEL COMP 302 THREADS |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5518 ASSN STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| ASTM-A-313 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5688 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| ASTM-A-493 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5636 ASSN STD SINGLE MATERIAL RESPONSE THREADS |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | KNURLED NO. 5 |
| HEAD DIAMETER | 0.531 INCHES NOMINAL |
| HEAD HEIGHT | 0.308 INCHES MINIMUM AND |
| 0.318 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | SLOT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | CAPTIVE SCREW |