| DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | 0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS S144 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| PLATE THICKNESS | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| PLATE WIDTH | 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM |
| MOUNTING HOLE ARRANGEMENT STYLE | 1 HOLE |
| MOUNTING HOLE DIAMETER | 4.05 MILLIMETERS NOMINAL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM |
| NUT LENGTH | 1.460 INCHES MINIMUM AND 1.480 INCHES MAXIMUM |
| NUT MOUNTING PROVISION | STRAIGHT HOLES |
| NUT STYLE | PLATE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BRITISH AEROSPACE PLC BAE +0013 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |