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 | ||||
| 5305-01-642-0405 (5305016420405) | 5340-01-469-1045 (5340014691045) | 5315-01-562-5736 (5315015625736) | 5315-01-575-7397 (5315015757397) | |
| 5310-00-347-0214 (5310003470214) | 5320-01-073-2961 (5320010732961) | 5342-01-117-9590 (5342011179590) | 5355-00-201-5369 (5355002015369) | |
| 5305-01-321-3806 (5305013213806) | 5330-00-256-6918 (5330002566918) | 5365-01-625-0045 (5365016250045) | 5310-01-593-4780 (5310015934780) | |
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