| THREAD SERIES DESIGNATOR | UNC | 
| NOMINAL THREAD DIAMETER | 0.138 INCHES | 
| THREAD QUANTITY PER INCH | 32 | 
| THREAD CLASS | 3A | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD LENGTH | 0.480 INCHES MINIMUM | 
| FASTENER LENGTH | 0.515 INCHES NOMINAL | 
| MATERIAL | ALUMINUM ALLOY 6061 HEAD | 
|  | STEEL COMP 302 SPRING | 
|  | ALUMINUM ALLOY 6061 STAND-OFF | 
|  | STEEL COMP 302 OR | 
|  | STEEL COMP 304 OR | 
|  | STEEL COMP 305 OR | 
|  | STEEL COMP 316 OR | 
|  | STEEL COMP 321 OR | 
|  | STEEL COMP 347 OR | 
|  | STEEL COMP 384 OR | 
|  | STEEL COMP 385 FASTENER | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE HEAD | 
|  | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING | 
|  | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF | 
|  | ASTM A493 ASSN STD ALL MATERIAL RESPONSES FASTENER | 
| SURFACE TREATMENT | ANODIZE HEAD | 
|  | PASSIVATE SPRING | 
|  | ANODIZE STAND-OFF | 
|  | PASSIVATE FASTENER | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 TY1 CL1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD | 
|  | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING | 
|  | MIL-A-8625 TY1 CL1 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF | 
|  | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER | 
| HEAD STYLE | FLAT CHAMFER | 
| HEAD DIAMETER | 0.356 INCHES NOMINAL | 
| HEAD HEIGHT | 0.385 INCHES NOMINAL | 
| MATERIAL ACCOMMODATED THICKNESS | 0.094 INCHES MINIMUM AND | 
|  | 0.155 INCHES MAXIMUM | 
| SPECIAL FEATURES | HEAD VERTICALLY KNURLED | 
| THE MANUFACTURERS DATA |  | 
| MANUFACTURERS CODE | 17446 | 
| DESIGN CONTROL REFERENCE | FRB7500-6-C-3 |