| COUNTERBORE DIAMETER | 0.385 INCHES MINIMUM AND 0.400 INCHES MAXIMUM WASHER |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1110 OR STEEL COMP 1010 OR STEEL COMP 1020 OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| NUT COUNTERBORE DEPTH | 0.105 INCHES MINIMUM AND 0.125 INCHES MAXIMUM WASHER |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.715 INCHES MINIMUM AND 0.740 INCHES MAXIMUM |
| WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.083 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM 4342-M,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNF |