AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Seat Helical Compression Spring |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5340 Hardware Commercial |
| National Item Identification Number (NIIN) | 00-053-1654 (000531654) |
| NCB Code | USA (00) |
| Manufacturer | Hydro Aire Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATA | COUNTERSINK ANGLE IN DEG | 45.0 |
| ABKW | OVERALL HEIGHT | 0.1400 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.4850 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.1930 INCHES MINIMUM AND 0.1945 INCHES MAXIMUM |
| APGF | DESIGN TYPE | SOLID |
| AYRZ | COUNTERSINK DIAMETER | 0.2330 INCHES MINIMUM AND 0.2345 INCHES MAXIMUM |
| BBRB | END DIAMETER | 0.4000 INCHES NOMINAL |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.0800 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | SPLINED BORE W/TEN TEETH;NOT CASEHARDENED |
| MATT | MATERIAL | STEEL COMP 4130 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758, COND F4 MIL SPEC SINGLE MATERIAL RESPONSE |
| STYL | STYLE DESIGNATOR | SEAT |
| ZZZV | III FSC APPLICATION DATA | ROTOR BRAKE,ACFT |
| Relevant Components for NSN - 5340-00-053-1654, 5340000531654 | ||||
| 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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