| 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) | 01-125-3978 (011253978) |
| NCB Code | USA (01) |
| Manufacturer | Meggitt International Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| SR-5 | THE MANUFACTURERS DATA | |
| BBRB | END DIAMETER | 2.1000 INCHES MAXIMUM |
| APGF | DESIGN TYPE | SOLID |
| ABXV | BORE DIAMETER | 1.9000 INCHES MINIMUM AND 1.9100 INCHES MAXIMUM |
| SURF | SURFACE TREATMENT | ANODIZED,MIL-A-8625,TY 2,CL 1 |
| BZDL | COUNTERBORE LENGTH | 0.1110 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM |
| SR-5 | MANUFACTURERS CODE | 79318 |
| MATL | MATERIAL | ALUMINUM ALLOY, QQ-A-200/8, 6061, T6 |
| SR-5 | DESIGN CONTROL REFERENCE | 227462 |
| AAWY | COUNTERBORE DIAMETER | 2.0200 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.1360 INCHES MINIMUM AND 0.1760 INCHES MAXIMUM |
| Components Related to NSN - 5340-01-125-3978, 5340011253978 | ||||
| 5305-01-222-7769 (5305012227769) | 5365-01-044-5936 (5365010445936) | 5331-01-276-7349 (5331012767349) | 5340-00-536-5281 (5340005365281) | |
| 5365-00-550-5464 (5365005505464) | 5305-01-209-8688 (5305012098688) | 5340-01-624-2067 (5340016242067) | 5340-01-214-3681 (5340012143681) | |
| 5330-01-166-9520 (5330011669520) | 5306-00-528-5534 (5306005285534) | 5307-00-307-2340 (5307003072340) | 5340-01-382-3018 (5340013823018) | |
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