| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-003-9609 (010039609) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 2.656 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 3.500 INCHES NOMINAL |
| ABLC | EXTERNAL STRAIGHT KEY WIDTH | 0.438 INCHES NOMINAL |
| ABLJ | INTERNAL STRAIGHT KEY WIDTH | 0.301 INCHES MINIMUM AND 0.306 INCHES MAXIMUM |
| ABLQ | DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 1.157 INCHES MINIMUM AND 1.167 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 4.000 INCHES NOMINAL |
| ABMQ | EXTERNAL KEY QUANTITY | 11 |
| ABMR | INTERNAL KEY QUANTITY | 1 |
| ABPX | MATERIAL THICKNESS | 0.0823 INCHES MINIMUM AND 0.0971 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | TONGUES MUST BEND 90 DEG WITH OR ACROSS GRAIN WITHHOUT FRACTURING |
| HEAT | HEAT TREATMENT | HOT ROLLED |
| MATT | MATERIAL | STEEL COMP 1010 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-01-003-9609, 5310010039609 | ||||
| 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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