| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD 1ST MATERIAL RESPONSE OR |
| 66 FED STD 2ND MATERIAL RESPONSE OR |
| 66 FED STD 3RD MATERIAL RESPONSE OR |
| 66 FED STD 4TH MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD 5TH MATERIAL RESPONSE MECHANICAL LOCK |
| ASTM A547 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM A547 ASSN STD 2ND MATERIAL RESPONSE OR |
| MIL-S-6758 MIL SPEC 3RD MATERIAL RESPONSE SLEEVE |
| MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE STEM |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE MECHANICAL LOCK |
| CADMIUM AND |
| CHROMATE SLEEVE |
| CADMIUM STEM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE MECHANICAL LOCK |
| QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE SLEEVE |
| QQ-P-416 TY 1 CL 3 FED SPEC SINGLE TREATMENT RESPONSE STEM |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND |
| 40.0 ROCKWELL C MAXIMUM SLEEVE |
| 48.0 ROCKWELL C MINIMUM AND |
| 53.0 ROCKWELL C MAXIMUM STEM |
| HEAD MAJOR DIAMETER | 0.634 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |
| 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.256 INCHES NOMINAL |
| SHANK DIAMETER | 0.326 INCHES MINIMUM AND |
| 0.328 INCHES MAXIMUM |
| GRIP LENGTH | 0.969 INCHES MINIMUM AND |
| 1.032 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| THREAD CLASS | 2A |
| THREAD QUANTITY PER INCH | 18 |
| THREAD DIRECTION | RIGHT-HAND |
| EXPANSION DEVICE | SERRATED STEM-TYPE W |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 0HDW7 |
| DESIGN CONTROL REFERENCE | 0B100-T10-16 |