| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-471-9105 (004719105) |
| NCB Code | USA (00) |
| Manufacturer | United Technologies Corporation, Inspektorat Wsparcia Sil Zbrojnych, Sae International, Nimikkeistokeskus Ncb Finland, Westinghouse Electric Corp, Boeing Defence Australia, Military Standards Corp, Society Of Automotive Engineers Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 107T956 | united technologies corporation | washer key | RFQ |
| 5310PL0194257 | inspektorat wsparcia sil zbrojnych | washer key | RFQ |
| MS9581-10 | sae international | washer key | RFQ |
| 10121402 | nimikkeistokeskus ncb finland | washer key | RFQ |
| 107T956 | westinghouse electric corp | washer key | RFQ |
| MS9581-10 | boeing defence australia | washer key | RFQ |
| MS9581-10 | military standards corp | washer key | RFQ |
| MS9581-10 | society of automotive engineers inc | washer key | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.250 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.110 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| ABLD | EXTERNAL TAPERED KEY WIDTH | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.110 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.265 INCHES MINIMUM AND 0.275 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 15.0 DEGREES NOMINAL |
| MATT | MATERIAL | STEEL COMP 321 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | 90 DEGREE LOCKING KEY |
| Relevant Components for NSN - 5310-00-471-9105, 5310004719105 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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