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| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| ANEE | GRIP LENGTH | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| SFTT | SURFACE TREATMENT | NICKEL AND CADMIUM OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAJD | THREAD CLASS | 3A |
| AASL | HEAD DIAMETER | 0.412 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| CQBC | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
| CRSQ | COUNTERSINK ANGLE | 59.75 DEGREES MINIMUM AND 60.25 DEGREES MAXIMUM |
| AASB | FASTENER LENGTH | 0.924 INCHES MINIMUM AND 0.954 INCHES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL |
| MATT | MATERIAL | STEEL COMP H11 OVERALL |
| AAUR | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP 32.0 MICROINCHES THREADS |
| AASA | THREAD LENGTH | 0.352 INCHES MINIMUM AND 0.402 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | BEARING SURFACE OF HEAD GROOVED TO 0.323 IN. MIN,0.325 IN. MAX DIA,0.050 IN. MIN,0.055 IN. MAX FROM TOP OF HEAD |
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AS9120B and ISO 9001:2015 |
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Aviation Suppliers Association Member |
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FAA AC 0056B Accredited |
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AS 6081:2012 Certification |
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ESD S20.20-2014 Certification |
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