The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-01-412-7536, 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 Atlas Stamping & Manufacturing Corp Dba Atlas Stamping & Manufacturing Corp. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-412-7536 |
| Primary Part Number | 4057T21P06 |
| Item Name | Seal,air,aircraft Gas Turbine En |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Atlas Stamping & Manufacturing Corp Dba Atlas Stamping & Manufacturing Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4057T21P06 | Atlas Stamping & Manufacturing Corp Dba Atlas Stamping & Manufacturing Corp (USA) |
| 4057T21P06 | Berkshire Manufactured Products, Inc. Dba Pursuit Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 10106514 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4057T21P06 | 5/9 Secondary reference B-C-D Metal Products, Inc |
| 4057T21P06 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2840-01-412-7536 is a Seal,air,aircraft Gas Turbine En, manufactured by Atlas Stamping & Manufacturing Corp Dba Atlas Stamping & Manufacturing Corp, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-412-7536 has 2 manufacturer part numbers on file: 4057T21P06 (Atlas Stamping & Manufacturing Corp Dba Atlas Stamping & Manufacturing Corp), 4057T21P06 (Berkshire Manufactured Products, Inc. Dba Pursuit Aerospace).
Key specifications for 4057T21P06: Special Features: MATERIAL: AMS 5608; STOCK THICKNESS: 0.005-0.007 IN. IN. 0 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.
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.