| 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) | 01-026-6746 (010266746) |
| NCB Code | USA (01) |
| Manufacturer | The Boeing Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAWY | COUNTERBORE DIAMETER | 1.2800 INCHES MINIMUM AND 1.2900 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 2.9300 INCHES MINIMUM AND 2.9700 INCHES MAXIMUM |
| ABPR | FIRST STEP DIAMETER | 1.7800 INCHES NOMINAL |
| ABPS | FIRST STEP LENGTH | 0.1200 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.6800 INCHES MINIMUM AND 0.6900 INCHES MAXIMUM |
| AMFZ | SECOND END DIAMETER | 1.5400 INCHES NOMINAL |
| APGF | DESIGN TYPE | SOLID |
| BBRB | END DIAMETER | 1.2200 INCHES MINIMUM AND 1.2300 INCHES MAXIMUM |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.2000 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 2.1500 INCHES NOMINAL |
| BZMH | SPHERICAL SEAT TOP RADIUS | 0.0200 INCHES MINIMUM AND 0.0300 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | COUNTERSINK ANGLE ALONG COUNTERBORE LENGTH 43.0 TO 47.0 DEGREES; SEAT ANGLE 42.0 TO 48.0 DEGREES; LEFT END BODY CORNER 0.0900 TO 0.1500 INCH R; CHAMFER RIGHT END CORNERS 45.0 DEGREES BY 0.03 INCHES |
| MATT | MATERIAL | ALUMINUM ALLOY |
| STYL | STYLE DESIGNATOR | SEAT |
| Relevant Components for NSN - 5340-01-026-6746, 5340010266746 | ||||
| 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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