| 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) | 01-172-9500 (011729500) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAWY | COUNTERBORE DIAMETER | 0.4000 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 0.1700 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.5100 INCHES NOMINAL |
| ABPS | FIRST STEP LENGTH | 0.0550 INCHES NOMINAL |
| ABPT | SECOND STEP DIAMETER | 0.6500 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.2640 INCHES NOMINAL |
| ALME | MATERIAL HARDNESS RATING | 77.7 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 82.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM |
| APGF | DESIGN TYPE | SOLID |
| BBRB | END DIAMETER | 0.3350 INCHES NOMINAL |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.0470 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.0640 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | NOT CASEHARDENED |
| MATT | MATERIAL | STEEL CORROSION RESISTING |
| STYL | STYLE DESIGNATOR | SEAT |
| ZZZV | FSC APPLICATION DATA | ACFT HYD SYSTEM |
| Components Related to NSN - 5340-01-172-9500, 5340011729500 | ||||
| 5320-01-288-0602 (5320012880602) | 5315-01-595-1361 (5315015951361) | 5310-01-425-6377 (5310014256377) | 5330-00-128-1254 (5330001281254) | |
| 5330-01-540-2102 (5330015402102) | 5310-01-661-3334 (5310016613334) | 5320-01-255-7970 (5320012557970) | 5330-01-103-2439 (5330011032439) | |
| 5365-00-115-6523 (5365001156523) | 5306-01-431-2275 (5306014312275) | 5330-01-476-3266 (5330014763266) | 5355-01-113-6386 (5355011136386) | |
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