AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Nut Plain Round |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-256-9252 (012569252) |
| NCB Code | USA (01) |
| Manufacturer | Mercer Products And Manufacturing, Lockheed Martin Corporation, Inspektorat Wsparcia Sil Zbrojnych, A And M Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAWY | COUNTERBORE DIAMETER | 2.030 INCHES NOMINAL BOTH ENDS |
| ABQU | DRIVE POINT DEPTH | 0.090 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| ACTA | NUT STYLE | ROUND |
| ACTD | NUT DIAMETER | 2.500 INCHES NOMINAL |
| ADBG | NUT THICKNESS | 0.550 INCHES NOMINAL |
| ADBH | DRIVE POINT WIDTH | 0.310 NOMINAL INCHES |
| ADBM | DRIVE POINT QUANTITY | 2 |
| BZRR | THREAD SERIES | UN |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| CQJX | NOMINAL THREAD SIZE | 2.000 INCHES |
| CRSQ | COUNTERSINK ANGLE | 105.0 DEGREES MINIMUM BOTH ENDS AND 115.0 DEGREES MAXIMUM BOTH ENDS |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Relevant Components for NSN - 5310-01-256-9252, 5310012569252 | ||||
| 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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