| 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) | 00-914-8395 (009148395) |
| NCB Code | USA (00) |
| Manufacturer | Napco International Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKW | OVERALL HEIGHT | 0.4370 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 1.3610 INCHES MINIMUM AND 1.3710 INCHES MAXIMUM |
| ABPS | FIRST STEP LENGTH | 0.1090 INCHES NOMINAL |
| ABPT | SECOND STEP DIAMETER | 1.7180 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.6540 INCHES NOMINAL |
| AJFY | SEAT ANGLE IN DEG | 30.0 |
| ALME | MATERIAL HARDNESS RATING | 50.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM |
| AMFZ | SECOND END DIAMETER | 1.2500 INCHES NOMINAL |
| APGF | DESIGN TYPE | SOLID |
| BBRB | END DIAMETER | 0.8120 INCHES NOMINAL |
| BYYF | BORE TAPER IN DEG | 14.3 |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.1410 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | MAGNETIC PERMEABILITY SHALL BE LESS THAN 1.2 BEFORE FABRICATION AND NOT GREATER THAN 2.0 AFTER FABRICATION AS MEASURED IN A 200 OERSTED FIELD |
| MATT | MATERIAL | STEEL,AISI 4140 OR SAE 4140 |
| STYL | STYLE DESIGNATOR | SEAT |
| Relevant Components for NSN - 5340-00-914-8395, 5340009148395 | ||||
| 5340-01-128-5602 (5340011285602) | 5306-01-598-2806 (5306015982806) | 5306-00-660-2761 (5306006602761) | 5310-01-632-4360 (5310016324360) | |
| 5365-00-003-1724 (5365000031724) | 5305-01-246-0089 (5305012460089) | 5310-00-052-8840 (5310000528840) | 5310-00-016-5834 (5310000165834) | |
| 5330-00-477-2508 (5330004772508) | 5310-00-424-2018 (5310004242018) | 5325-00-349-3151 (5325003493151) | 5365-01-613-0724 (5365016130724) | |
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