AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Guide Valve Stem |
| Federal Supply Group (FSG) | Engines Turbines and Components |
| Federal Supply Class (FSC) | 2815 Diesel Engines and Components |
| National Item Identification Number (NIIN) | 00-798-3532 (007983532) |
| NCB Code | USA (00) |
| Manufacturer | Napco International Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 4.250 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.5000 INCHES NOMINAL |
| BQDC | BORE COUNTERSINK | NOT INCLUDED |
| BQSF | BORE COUNTERBORE | INCLUDED |
| BQSN | AA END CHAMFER ANGLE IN DEG | 45.0 |
| BQSL | BB END CHAMFER ANGLE IN DEG | 45.0 |
| BQSM | AA END CHAMFER LENGTH | 0.031 INCHES NOMINAL |
| MATT | MATERIAL | IRON CAST |
| AAWY | COUNTERBORE DIAMETER | 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| AAWZ | COUNTERBORE DEPTH | 0.469 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 1.225 INCHES MINIMUM AND 1.230 INCHES MAXIMUM |
| AETC | METALLIC HARDNESS RATING | 27.0 MINIMUM ROCKWELL C AND 37.0 MAXIMUM ROCKWELL C |
| BDYS | COUNTERBORE LOCATION | AA END |
| BQSH | AA END DIAMETER | 0.870 INCHES MINIMUM AND 0.873 INCHES MAXIMUM |
| BQSJ | BB END SHANK DIAMETER | 0.808 INCHES MINIMUM AND 0.814 INCHES MAXIMUM |
| BQSK | BB END CHAMFER LENGTH | 0.125 INCHES NOMINAL |
| Relevant Components for NSN - 2815-00-798-3532, 2815007983532 | ||||
| 2840-00-915-9847 (2840009159847) | 2805-00-008-2915 (2805000082915) | 2835-01-068-6525 (2835010686525) | 2840-01-673-4607 (2840016734607) | |
| 2840-01-544-9568 (2840015449568) | 2805-01-536-0205 (2805015360205) | 2835-00-611-4520 (2835006114520) | 2840-00-156-9366 (2840001569366) | |
| 2810-00-335-7852 (2810003357852) | 2825-00-446-6563 (2825004466563) | 2840-00-931-4767 (2840009314767) | 2835-01-571-6902 (2835015716902) | |
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