| 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 | ||||
| 5355-00-871-8773 (5355008718773) | 5340-01-243-1107 (5340012431107) | 5315-01-506-6976 (5315015066976) | 5360-01-371-2450 (5360013712450) | |
| 5305-01-613-5639 (5305016135639) | 5330-01-519-5567 (5330015195567) | 5310-01-577-1001 (5310015771001) | 5342-01-650-6980 (5342016506980) | |
| 5325-01-544-9407 (5325015449407) | 5330-01-276-9620 (5330012769620) | 5340-01-659-7595 (5340016597595) | 5340-01-362-7603 (5340013627603) | |
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