| 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) | 00-972-7178 (009727178) |
| NCB Code | USA (00) |
| Manufacturer | Brinkley Technology Group Llc, Hercules Engine Co Inc, Bogue Electric Manufacturing Co |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATA | COUNTERSINK ANGLE IN DEG | 45.0 |
| ABKW | OVERALL HEIGHT | 0.3437 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.9062 INCHES NOMINAL |
| ABPS | FIRST STEP LENGTH | 0.0937 INCHES NOMINAL |
| ABPT | SECOND STEP DIAMETER | 1.1562 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.5000 INCHES NOMINAL |
| AJFY | SEAT ANGLE IN DEG | 37.0 |
| AMFZ | SECOND END DIAMETER | 0.8437 INCHES NOMINAL |
| APGF | DESIGN TYPE | SOLID |
| AYRZ | COUNTERSINK DIAMETER | 0.5312 INCHES NOMINAL |
| BBRB | END DIAMETER | 0.6250 INCHES NOMINAL |
| BYYF | BORE TAPER IN DEG | 10.0 |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.0468 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.0156 INCHES NOMINAL |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| MATT | MATERIAL | STEEL |
| STYL | STYLE DESIGNATOR | SEAT |
| Relevant Components for NSN - 5340-00-972-7178, 5340009727178 | ||||
| 5330-01-701-4089 (5330017014089) | 5305-01-213-9722 (5305012139722) | 5320-01-460-5665 (5320014605665) | 5306-01-475-3608 (5306014753608) | |
| 5306-01-626-6230 (5306016266230) | 5306-00-292-8749 (5306002928749) | 5342-01-673-3505 (5342016733505) | 5330-01-283-1784 (5330012831784) | |
| 5365-01-228-1431 (5365012281431) | 5365-00-466-3750 (5365004663750) | 5310-00-595-7616 (5310005957616) | 5305-00-550-0140 (5305005500140) | |
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