| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-196-2749 (011962749) |
| NCB Code | USA (01) |
| Manufacturer | Sundstrand International Corporation, Hamilton Sundstrand Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 1.105 INCHES MINIMUM AND 1.115 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 1.390 INCHES MINIMUM AND 1.400 INCHES MAXIMUM |
| ABLJ | INTERNAL STRAIGHT KEY WIDTH | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM |
| ABLQ | DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.492 INCHES MINIMUM AND 0.494 INCHES MAXIMUM |
| ABMR | INTERNAL KEY QUANTITY | 19 |
| ABPX | MATERIAL THICKNESS | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | ONE TOOTH PRE-BENT |
| MATT | MATERIAL | STEEL COMP 1010 OR STEEL COMP 1012 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A568 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-01-196-2749, 5310011962749 | ||||
| 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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