The Piston Assembly,decoupler, cataloged under National Stock Number 2835-01-004-0552, 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. The manufacturer of record is Thomas Instrument, Incorporated. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2835-01-004-0552 |
| Primary Part Number | 87030-01 |
| Item Name | Piston Assembly,decoupler |
| FSC / FSG | 2835 / 28 — Gas Turbines and Jet Engines; Non-aircraft Prime Mover, Aircraft Non-prime Mover, and Components |
| Manufacturer | Thomas Instrument, Incorporated |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,AMS5643,3.495 IN. MIN,3.505 IN. MAX LG,1.531 IN. MIN,1.536 IN. MAX W,HEAT TREAT TO ROCKWELL HARDNESS RC31-39,PER AIRESEARCH SPEC NUMBER HT5038 IN |
| Reference Data and Literature | AF TO. 2JA16-2-4 APPLIES |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 87030-01 | Thomas Instrument, Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 366125-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2835-01-004-0552 is a Piston Assembly,decoupler, manufactured by Thomas Instrument, Incorporated, classified under FSC 2835, Gas Turbines and Jet Engines; Non-aircraft Prime Mover, Aircraft Non-prime Mover, and Components. Status: active.
NSN 2835-01-004-0552 has 1 manufacturer part number on file: 87030-01 (Thomas Instrument, Incorporated).
Key specifications for 87030-01: General Characteristics Item Description: CRES,AMS5643,3.495 IN. MIN,3.505 IN. MAX LG,1.531 IN. MIN,1.536 IN. MAX W,HEAT TREAT TO ROCKWELL HARDNESS RC31-39,PER AIRESEARCH SPEC NUMBER HT5038 IN; Reference Data and Literature: AF TO. 2JA16-2-4 APPLIES; End Item Identification: GEARBOX,ACCESSORY DRIVE,TURBINE ENGINE,PART NUMBER 386720-1-31. 2 specifications are 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 2835-01-004-0552 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.