| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-222-0712 (002220712) |
| NCB Code | USA (00) |
| Manufacturer | Aeronautical Standards Group, Military Standards Corp, National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| AN7503-28 | aeronautical standards group | washer key | 88044 | RFQ |
| MS21258Z28 | military standards corp | washer key | 96906 | RFQ |
| MS21258Z28 | national aerospace standards com | washer key | 80205 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 1.755 INCHES MINIMUM AND 1.765 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 2.250 INCHES MINIMUM AND 2.280 INCHES MAXIMUM |
| ABLJ | INTERNAL STRAIGHT KEY WIDTH | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM |
| ABLQ | DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| ABMR | INTERNAL KEY QUANTITY | 1 |
| ABPX | MATERIAL THICKNESS | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 1010 OR STEEL COMP 1018 OR STEEL COMP 1025 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633,TYPE 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-00-222-0712, 5310002220712 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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