AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-304-6749 (013046749) |
| NCB Code | USA (01) |
| Manufacturer | Rockwell Collins Aerospace, Wess Del Incorporated, Nimikkeistokeskus Ncb Finland |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM |
| CSTM | RECESS ANGLE | 98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| Relevant Components for NSN - 5310-01-304-6749, 5310013046749 | ||||
| 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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