| EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| FASTENER LENGTH | 1.014 INCHES MINIMUM AND 1.034 INCHES MAXIMUM |
| HARDNESS RATING | 55.0 ROCKWELL C MINIMUM BEARING SURFACE OF HEAD |
| HEAD HEIGHT | 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| SHOULDER DIAMETER | 0.2485 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 0.589 INCHES MINIMUM AND 0.599 INCHES MAXIMUM FIRST SHOULDER |
| SPECIAL FEATURES | BEARING SURFACE OF HEAD NITRIDED CASE TO PRODUCED BY ION-NITRIDING; SURFACE OF SHOULDER CASE HARDEN PER P11TF2 CLA (NITRIDING) CAGEC 07482; SURFACES NOT TO BE NITRIDED MAY BE MASKED BY MECHANICAL MEANS |
| WIDTH BETWEEN FLATS | 0.3125 INCHES NOMINAL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.415 INCHES MINIMUM AND 0.445 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 32 |