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) | 00-020-2428 (000202428) |
| NCB Code | USA (00) |
| Manufacturer | United Technologies Corporation, Royal Oak Gage Inc, Nielsen Hardware Corporation, Military Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.440 INCHES MINIMUM AND 0.445 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 1.186 INCHES MINIMUM AND 1.210 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| ABMH | RECESS DEPTH | 0.181 INCHES MINIMUM AND 0.212 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.038 INCHES MINIMUM AND 0.041 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 321 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| Relevant Components for NSN - 5310-00-020-2428, 5310000202428 | ||||
| 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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