| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.483 INCHES NOMINAL |
| FASTENER LENGTH | 0.545 INCHES NOMINAL |
| MATERIAL | ALUMINUM ALLOY 6061 HEAD |
| STEEL COMP 1075 PRIMARY WASHER |
| STEEL COMP 304 STAND-OFF |
| STEEL COMP 302 OR |
| STEEL COMP 305 OR |
| STEEL COMP 316 FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE HEAD |
| SAE ASSN STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| MIL-S-23195 MIL SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| ASTM A493 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | ANODIZE HEAD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TY 1 CL 1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD |
| QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFF |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| HARDNESS RATING | 85.0 ROCKWELL B MINIMUM AND |
| 90.0 ROCKWELL B MAXIMUM PRIMARY WASHER |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 0.420 INCHES NOMINAL |
| HEAD HEIGHT | 0.495 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.066 INCHES MINIMUM AND |
| 0.100 INCHES MAXIMUM |
| SPECIAL FEATURES | STRAIGHT KNURL ON HEAD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |