| 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) | 00-356-1421 (003561421) |
| NCB Code | USA (00) |
| Manufacturer | Cummins Incorporated |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATA | COUNTERSINK ANGLE IN DEG | 45.0 |
| AATE | CHAMFER ANGLE IN DEG | 15.0 |
| AAWY | COUNTERBORE DIAMETER | 1.0550 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 0.7820 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 1.2880 INCHES NOMINAL |
| ABPS | FIRST STEP LENGTH | 0.1380 INCHES NOMINAL |
| ABPT | SECOND STEP DIAMETER | 1.6220 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 1.0550 INCHES NOMINAL |
| AJFY | SEAT ANGLE IN DEG | 45.0 |
| AMFZ | SECOND END DIAMETER | 1.3650 INCHES NOMINAL |
| APGF | DESIGN TYPE | SOLID |
| AYRZ | COUNTERSINK DIAMETER | 1.1550 INCHES NOMINAL |
| BBRB | END DIAMETER | 0.6150 INCHES NOMINAL |
| BYYF | BORE TAPER IN DEG | 15.0 |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.5200 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.1750 INCHES NOMINAL |
| MATT | MATERIAL | STEEL |
| STYL | STYLE DESIGNATOR | SEAT |
| Components Related to NSN - 5340-00-356-1421, 5340003561421 | ||||
| 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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