| 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) | 00-052-4379 (000524379) |
| NCB Code | USA (00) |
| Manufacturer | Hydro Aire Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATA | COUNTERSINK ANGLE IN DEG | 59.000 |
| AAWY | COUNTERBORE DIAMETER | 0.1360 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 0.1300 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.4600 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.0370 INCHES NOMINAL |
| ALME | MATERIAL HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| APGF | DESIGN TYPE | SOLID |
| AYRZ | COUNTERSINK DIAMETER | 0.1360 INCHES NOMINAL |
| BBRB | END DIAMETER | 0.3050 INCHES NOMINAL |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.0900 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.0650 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | NOT CASEHARDENED |
| MATT | MATERIAL | STEEL COMP 416 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS 416 FED SPEC SINGLE MATERIAL RESPONSE |
| SFTT | SURFACE TREATMENT | PASSIVATE |
| ZZZV | FSC APPLICATION DATA | ROTOR BRAKE,ACFT |
| Components Related to NSN - 5340-00-052-4379, 5340000524379 | ||||
| 5340-01-631-5368 (5340016315368) | 5330-01-297-3590 (5330012973590) | 5360-00-245-2131 (5360002452131) | 5365-01-571-1663 (5365015711663) | |
| 5342-01-255-3551 (5342012553551) | 5330-01-556-4440 (5330015564440) | 5330-01-613-3472 (5330016133472) | 5342-01-259-3873 (5342012593873) | |
| 5340-00-575-1873 (5340005751873) | 5310-00-151-9032 (5310001519032) | 5315-01-622-0550 (5315016220550) | 5340-01-429-0419 (5340014290419) | |
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