| DRIVE POINT DEPTH | 0.105 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| DRIVE POINT QUANTITY | 4 |
| DRIVE POINT WIDTH | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| BEARING SURFACE FINISH | 63.0 MICROINCHES |
| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL SECOND END |
| COUNTERBORE DIAMETER | 2.125 INCHES MINIMUM AND 2.135 INCHES MAXIMUM FIRST END |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| NUT DIAMETER | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM FIRST END |
| NUT STYLE | ROUND |
| NUT THICKNESS | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A331 ASSN STD ALL MATERIAL RESPONSES OR AMS 6414 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6415 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A322 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 4340 OVERALL |
| NOMINAL THREAD SIZE | 2.125 INCHES |
| SMALL END DIAMETER | 2.175 INCHES MINIMUM AND 2.195 INCHES MAXIMUM |
| UNDERCUT THICKNESS | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UN |
| THREAD QUANTITY PER INCH | 20 |