| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM |
| AASK | HEAD STYLE | ROUND |
| AASL | HEAD DIAMETER | 0.557 INCHES MINIMUM AND 0.590 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.216 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CYAU | SCREW MATERIAL | STEEL COMP 4150 |
| CYAW | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE |
| CYBA | SCREW SURFACE TREATMENT | CADMIUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
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