| 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) | 00-790-9729 (007909729) |
| NCB Code | USA (00) |
| Manufacturer | General Signal Corp, Eaton Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKW | OVERALL HEIGHT | 0.8750 INCHES NOMINAL |
| ABPT | SECOND STEP DIAMETER | 1.1900 INCHES NOMINAL |
| ABPU | SECOND STEP LENGTH | 0.0500 INCHES NOMINAL |
| BZLN | SECOND COUNTERBORE DIAMETER | 0.7650 INCHES NOMINAL |
| ZZZV | FSC APPLICATION DATA | PUMP UNIT,RECIPROCATING 4320006650747 165WG01001 |
| AAWY | COUNTERBORE DIAMETER | 0.3750 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.8940 INCHES MINIMUM AND 0.8970 INCHES MAXIMUM |
| ABPS | FIRST STEP LENGTH | 0.6060 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.2787 INCHES MINIMUM AND 0.2847 INCHES MAXIMUM |
| BBRB | END DIAMETER | 0.5160 INCHES NOMINAL |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.2190 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.6890 INCHES NOMINAL |
| BZDM | SECOND COUNTERBORE LENGTH | 0.5800 INCHES NOMINAL |
| MATT | MATERIAL | STEEL |
| Relevant Components for NSN - 5340-00-790-9729, 5340007909729 | ||||
| 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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