AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Shouldered And Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-438-7162 (004387162) |
| NCB Code | USA (00) |
| Manufacturer | Tek Precision Co Ltd, Northrop Grumman Systems Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| AAVH | SHOULDER DIAMETER | 0.235 INCHES MINIMUM AND 0.240 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.562 INCHES NOMINAL |
| ABMD | RECESS DIAMETER | 0.202 INCHES NOMINAL |
| ABMG | SHOULDER HEIGHT | 0.036 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.037 INCHES MINIMUM AND 0.047 INCHES MAXIMUM |
| CSTM | RECESS ANGLE | 90.0 DEGREES NOMINAL |
| CSYM | SURFACE FINISH | 40.0 MICROINCHES INNER |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL OR QQ-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | ANODIZE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | SHOULDERED AND RECESSED |
| Relevant Components for NSN - 5310-00-438-7162, 5310004387162 | ||||
| 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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