| Item Name | Washer Spring Tension |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-249-0489 (012490489) |
| NCB Code | USA (01) |
| Manufacturer | Bell Helicopter Textron Inc, Technical Support Center, Joint Oil Analysis Program, Commanding Officer |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.249 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 3.500 INCHES MINIMUM AND 3.530 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | HOLE CSK 45.0 DEG BY 0.030 IN. DIA |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T3 OR T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PRIMER OVERALL |
| STYL | STYLE DESIGNATOR | SPRING TENSION |
| Relevant Components for NSN - 5310-01-249-0489, 5310012490489 | ||||
| 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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