| 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 |
| Relevant Components for NSN - 5340-00-356-1421, 5340003561421 | ||||
| 5330-00-037-6893 (5330000376893) | 5307-00-803-5029 (5307008035029) | 5306-00-638-8373 (5306006388373) | 5330-01-185-7225 (5330011857225) | |
| 5365-00-089-1699 (5365000891699) | 5331-01-025-7783 (5331010257783) | 5330-01-362-7880 (5330013627880) | 5307-01-286-8388 (5307012868388) | |
| 5340-01-407-7865 (5340014077865) | 5340-01-609-2404 (5340016092404) | 5330-01-167-2303 (5330011672303) | 5340-01-145-4055 (5340011454055) | |
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