| 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) | 00-140-5278 (001405278) |
| NCB Code | USA (00) |
| Manufacturer | Hamilton Sundstrand Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| ALME | MATERIAL HARDNESS RATING | 49.5 ROCKWELL C NOMINAL |
| APGF | DESIGN TYPE | SOLID |
| BZMH | SPHERICAL SEAT TOP RADIUS | 0.5950 INCHES MINIMUM AND 0.6100 INCHES MAXIMUM |
| MATT | MATERIAL | ALUMINUM ALLOY,AMS4117 |
| SFTT | SURFACE TREATMENT | ANODIZE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | HS334TYPE 1 FSCM 73030 MFR REF SINGLE TREATMENT RESPONSE |
| ZZZV | FSC APPLICATION DATA | AIRCRAFT ENVIRONMENTAL SYSTEM |
| Relevant Components for NSN - 5340-00-140-5278, 5340001405278 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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