| FASTENER LENGTH | 1.000 INCHES NOMINAL |
| FEATURES PROVIDED | FINISHED HEAD |
| HARDNESS RATING | 23.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 69000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 2 GRADE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.000 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNC |
| WIDTH BETWEEN FLATS | 0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |