| Item Name | Washer Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-281-6349 (002816349) |
| NCB Code | USA (00) |
| Manufacturer | National Aerospace Standards Com, Nimikkeistokeskus Ncb Finland, Sikorsky Aircraft Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.568 INCHES MINIMUM AND 0.579 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.968 INCHES NOMINAL |
| ABMD | RECESS DIAMETER | 0.667 INCHES MINIMUM AND 0.687 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.078 INCHES NOMINAL |
| CSTM | RECESS ANGLE | 90.0 DEGREES NOMINAL |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES BOTTOM |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES TOP |
| MATT | MATERIAL | STEEL COMP 321 OVERALL OR STEEL COMP 347 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6721 MIL SPEC ALL MATERIAL RESPONSES OVERALL OR QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-NAS1587 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Relevant Components for NSN - 5310-00-281-6349, 5310002816349 | ||||
| 5315-01-392-6539 (5315013926539) | 5305-00-370-0922 (5305003700922) | 5330-00-108-1053 (5330001081053) | 5305-00-282-3260 (5305002823260) | |
| 5310-00-825-0783 (5310008250783) | 5365-01-200-6930 (5365012006930) | 5340-01-352-9365 (5340013529365) | 5330-01-231-5219 (5330012315219) | |
| 5331-01-452-9668 (5331014529668) | 5305-00-151-8683 (5305001518683) | 5320-00-323-6041 (5320003236041) | 5330-00-516-3829 (5330005163829) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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