| FASTENER LENGTH | 1.449 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| HEAD HEIGHT | 0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1016 AND STEEL COMP 1019 AND STEEL COMP 1021 AND STEEL COMP 1022 AND STEEL COMP 1524 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | D TYPE |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.375 INCHES |
| NONMACHINE THREAD STYLE | THRU SLOT (TYPE D) |
| WIDTH BETWEEN FLATS | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |