| COUNTERBORE DIAMETER | 0.140 INCHES NOMINAL BOSS |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 430F OR STEEL COMP 430FSE OVERALL |
| NOMINAL THREAD SIZE | 0.112 INCHES |
| NUT COUNTERBORE DEPTH | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM BOSS |
| NUT DIAMETER | 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |
| NUT HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| PILOT LENGTH | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM |
| PILOT DIAMETER | 0.196 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 40 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |