| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-521-3771 (005213771) |
| NCB Code | USA (00) |
| Manufacturer | Sikorsky Aircraft Corporation |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| S1210-0117-000 | sikorsky aircraft corporation | washer key | 78286 | RFQ |
| S12-10-1007 | sikorsky aircraft corporation | washer key | 78286 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 3.625 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 4.188 INCHES NOMINAL |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.3125 INCHES NOMINAL |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 5.124 INCHES NOMINAL |
| ABMQ | EXTERNAL KEY QUANTITY | 18 |
| FEAT | SPECIAL FEATURES | THREE KEYS 0.375 IN.W WITH 0.391 IN. DIA HOLE CENTRALLY LOCATED |
| MATT | MATERIAL | NICKEL ALLOY OR STEEL COMP 302 OR STEEL COMP 4 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 COMP G COND A MIL SPEC 2ND MATERIAL RESPONSE OR QQ-S-636 COND 4 FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OR CADMIUM OVERALL |
| Relevant Components for NSN - 5310-00-521-3771, 5310005213771 | ||||
| 5325-00-489-4951 (5325004894951) | 5305-01-688-2332 (5305016882332) | 5310-01-270-2593 (5310012702593) | 5360-01-362-9775 (5360013629775) | |
| 5305-01-574-2082 (5305015742082) | 5330-00-875-6402 (5330008756402) | 5310-01-166-6682 (5310011666682) | 5325-01-330-8489 (5325013308489) | |
| 5310-01-519-7106 (5310015197106) | 5310-12-130-8939 (5310121308939) | 5331-01-513-1941 (5331015131941) | 5310-01-360-7550 (5310013607550) | |
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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