| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 1.403 INCHES NOMINAL |
| MATERIAL | STEEL COMP 302 SPRING |
| STEEL CORROSION RESISTING STAND-OFF |
| STEEL CORROSION RESISTING FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A313 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 5678 ASSN STD 2ND MATERIAL RESPONSE SPRING |
| AMS 5640 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM A555 ASSN STD 2ND MATERIAL RESPONSE OR |
| ASTMA581 ASSN STD 3RD MATERIAL RESPONSE OR |
| ASTM A582 ASSN STD 4TH MATERIAL RESPONSE STAND-OFF |
| QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR |
| AMS 5640 FED SPEC 2ND MATERIAL RESPONSE OR |
| ASTM A555 ASSN STD 3RD MATERIAL RESPONSE OR |
| ASTM A581 ASSN STD 4TH MATERIAL RESPONSE OR |
| ASTM A582 ASSN STD 5TH MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FILLISTER |
| HEAD DIAMETER | 0.400 INCHES NOMINAL |
| HEAD HEIGHT | 0.222 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.255 INCHES NOMINAL |