AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| 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 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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