| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.125 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.125 INCHES NOMINAL |
| AASK | HEAD STYLE | HEADLESS (SETSCREW) |
| AAUH | SPLINE MINOR DIAMETER | 0.055 INCHES MINIMUM AND 0.056 INCHES MAXIMUM |
| AAUJ | SPLINE MAJOR DIAMETER | 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| AAUK | SPLINE WIDTH | 0.022 INCHES MINIMUM AND 0.023 INCHES MAXIMUM |
| ABQJ | POINT STYLE | OVAL |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| AHYM | NOMINAL THREAD DIAMETER | 0.138 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQFM | HARDNESS RATING | 45.0 ROCKWELL C MINIMUM OVERALL AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| MATT | MATERIAL | STEEL COMP 4037 OVERALL OR STEEL COMP 4137 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8630 OVERALL OR STEEL COMP 8740 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
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