| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.220 INCHES NOMINAL |
| EXTENDED WASHER THICKNESS | 0.080 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 0.730 INCHES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FASTENER LENGTH | 2.320 INCHES NOMINAL |
| FIRST DIAMETER FROM HEAD | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.390 INCHES NOMINAL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 8637 OVERALL OR STEEL COMP 8640 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| WIDTH BETWEEN FLATS | 0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | JDT 826 FSCM 75160 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE ZINC OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.100 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |