AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Externally Relieved Body |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-331-8590 (013318590) |
| NCB Code | USA (01) |
| Manufacturer | Military Standards Corp, Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAWC | FIRST DIAMETER FROM HEAD | 0.131 INCHES MINIMUM AND 0.136 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | FLAT CHAMFER |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| MATT | MATERIAL | STEEL COMP 301 OVERALL OR STEEL COMP 302 OVERALL OR STEEL COMP 302B OVERALL OR STEEL COMP 303 OVERALL OR STEEL COMP 303SE OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 304L OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 308 OVERALL OR ST |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 4S STYLE |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.885 INCHES MINIMUM AND 0.925 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.583 INCHES MINIMUM AND 0.603 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5305-01-331-8590, 5305013318590 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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