| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.750 INCHES MINIMUM |
| FASTENER LENGTH | 2.156 INCHES MINIMUM AND |
| 2.250 INCHES MAXIMUM |
| MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| STEEL COMP 302 OR |
| STEEL COMP 303 OR |
| STEEL COMP 303SE OR |
| STEEL COMP 304 OR |
| STEEL COMP 304L FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR |
| ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR |
| ASTM A582 ASSN STD 3RD MATERIAL RESPONSE OR |
| QQ-763 FED SPEC 4TH MATERIAL RESPONSE OR |
| QQ-S-763 FED SPEC 5TH MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | OXIDE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CL2 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER |
| COLOR | BLACK FASTENER |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 0.308 INCHES MINIMUM AND |
| 0.332 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND |
| 82.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | SLOT |
| LOCKING FEATURE | PELLET THREADS |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND |
| 2 STYLE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |