| NONMACHINE THREAD STYLE | DOG TYPE (TYPE B OR C) |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.190 INCHES |
| FASTENER LENGTH | 0.312 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR |
| ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR |
| QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 29.0 ROCKWELL C MINIMUM AND |
| 37.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM YIELD STRENGTH | 75000 POUNDS PER SQUARE INCH |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 0.375 INCHES NOMINAL |
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |