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| 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 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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