| FASTENER LENGTH | 2.656 INCHES MINIMUM AND 2.750 INCHES MAXIMUM |
| HEAD DIAMETER | 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM |
| HEAD HEIGHT | 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM |
| HEAD STYLE | ROUND |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1C STYLE |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.216 INCHES |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |