The Mount,engine, cataloged under National Stock Number 2840-01-139-7127, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-139-7127 |
| Primary Part Number | AM1554 |
| Item Name | Mount,engine |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| General Characteristics Item Description | 3.310 IN. MIN,3.330 IN. MAX LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AM1554 PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| Reference | Meaning |
|---|---|
| 5033T74P01 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 2840-01-139-7127 is a Mount,engine, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-139-7127 has 1 manufacturer part number on file: AM1554 (New Hampshire Ball Bearings Inc Div Astro Division).
1 possible match (shared part number, not a government interchangeability claim): 6550-01-535-0089. Verify interchangeability with system specifications before substitution.
Key specifications for AM1554: General Characteristics Item Description: 3.310 IN. MIN,3.330 IN. MAX LG IN; End Item Identification: JET ENGINE MODEL F104. 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 2840-01-139-7127 has DEMIL Code B. 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.