The Piston,decoupler,gearbox, cataloged under National Stock Number 2835-01-018-0340, is classified within Federal Supply Class 2835 (Gas Turbines and Jet Engines; Non-aircraft Prime Mover, Aircraft Non-prime Mover, and Components) of the Engines, Turbines, and Components group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2835-01-018-0340 |
| Item Name | Piston,decoupler,gearbox |
| FSC / FSG | 2835 / 28 — Gas Turbines and Jet Engines; Non-aircraft Prime Mover, Aircraft Non-prime Mover, and Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL 4340 PER AIRESEARCH SPEC NO. EMS56627,28 TO 34 HARDNESS RATING,ROCKWELL C SCALE,0.685 IN. MIN,0.695 IN. MAX LG,0.864 IN. MIN,0.868 IN. MAX OD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 367314-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2835-01-018-0340 is a Piston,decoupler,gearbox, classified under FSC 2835, Gas Turbines and Jet Engines; Non-aircraft Prime Mover, Aircraft Non-prime Mover, and Components. Status: active.
Key specifications for 2835-01-018-0340: General Characteristics Item Description: STEEL 4340 PER AIRESEARCH SPEC NO. EMS56627,28 TO 34 HARDNESS RATING,ROCKWELL C SCALE,0.685 IN. MIN,0.695 IN. MAX LG,0.864 IN. MIN,0.868 IN. MAX OD IN; End Item Identification: GEARBOX,ACCESSORY DRIVE,TURBINE ENGINE,P/N 386706-3-1. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 2835-01-018-0340 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.