| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHERQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| MATERIAL | STEEL COMP 301 PRIMARY WASHERCOPPER ALLOY STAND-OFFSTEEL COMP 4037 FASTENER |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| WIDTH ACROSS FLATS | 0.109 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHERQQ-P-416 TY1 CL2 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFFQQ-P-416 TY1 CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE PRIMARY WASHERCADMIUM STAND-OFFCADMIUM FASTENER |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNC |
| FASTENER LENGTH | 0.520 INCHES MINIMUM AND 0.550 INCHES MAXIMUM |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM FASTENER AND 38.0 ROCKWELL C MAXIMUM FASTENER |
| HEAD DIAMETER | 0.212 INCHES MINIMUM AND 0.232 INCHES MAXIMUM |
| HEAD HEIGHT | 0.121 INCHES MINIMUM AND 0.151 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL ACCOMMODATED THICKNESS | 0.031 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |