| FASTENER LENGTH | 0.395 INCHES MINIMUM AND 0.435 INCHES MAXIMUM |
| HEAD DIAMETER | 0.410 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
| HEAD HEIGHT | 0.470 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD STYLE | KNURLED NO. 1 |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.032 INCHES MINIMUM AND 0.093 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE HEADAISI ASSN STD ALL MATERIAL RESPONSES PRIMARY WASHERQQ-W-423 COND B FED SPEC ALL MATERIAL RESPONSES SPRINGAISI ASSN STD SINGLE MATERIAL RESPONSE STAND-OFFAISI ASSN STD ALL MATERIAL RESPONSES FASTENER |
| MATERIAL | ALUMINUM ALLOY 6061 HEADSTEEL COMP 631 SECONDARY WASHERSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 PRIMARY WASHERSTEEL COMP 304 OR STEEL COMP 302 OR STEEL COMP 305 OR STEEL COMP 316 SPRINGSTEEL COMP 304 STAND-OFFSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 FASTENER |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 TY 3 MIL SPEC SINGLE TREATMENT RESPONSE HEADQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SECONDARY WASHERQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHERQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRINGQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFFQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| SURFACE TREATMENT | ANODIZE HEADPASSIVATE SECONDARY WASHERPASSIVATE PRIMARY WASHERPASSIVATE SPRINGPASSIVATE STAND-OFFPASSIVATE FASTENER |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3A |
| THREAD LENGTH | 0.222 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 32 |