| COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL |
| EXPANSION DEVICE | PLAIN STEM-TYPE T |
| FASTENER LENGTH | 0.419 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| GRIP LENGTH | 0.126 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.310 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES MANDREL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-430 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| MATERIAL | STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 MANDREL |
| SHANK DIAMETER | 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE BODY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416 FED SPEC 2ND TREATMENT RESPONSE OR MIL-P-16232 TY Z CL 2 MIL SPEC 3RD TREATMENT RESPONSE OR MIL-P-16232 TY Z CL 4 MIL SPEC 3RD TREATMENT RESPONSE MANDREL |
| SURFACE TREATMENT | ZINC OR CADMIUM OR PHOSPHATE MANDREL |