The Retainer,shroud, cataloged under National Stock Number 2840-00-042-6640, 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 Columbia Manufacturing, Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-042-6640 |
| Primary Part Number | 4028T32P01 |
| Item Name | Retainer,shroud |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Columbia Manufacturing, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | 0.208 IN. MIN,0.218 IN. MAX LG,0.173 IN. MIN,0.175 IN. MAX W 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 |
|---|---|
| 4028T32P01 | Columbia Manufacturing, Inc (USA) |
| 4028T32P01 | Dover Tool of Connecticut, Llc Div Na (USA) |
| 4028T32P01 | Metro Machine Works Inc (USA) |
| 4028T32P01 | Union Machine Co of Lynn, Inc (USA) |
| Reference | Meaning |
|---|---|
| 4028T32P01 | 3/2 Design control — primary reference U.S. Government activity |
| 4028T32P01 | 5/2 Secondary reference U.S. Government activity |
NSN 2840-00-042-6640 is a Retainer,shroud, manufactured by Columbia Manufacturing, Inc, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-042-6640 has 4 manufacturer part numbers on file: 4028T32P01 (Columbia Manufacturing, Inc), 4028T32P01 (Dover Tool of Connecticut, Llc Div Na), 4028T32P01 (Metro Machine Works Inc), 4028T32P01 (Union Machine Co of Lynn, Inc).
Key specifications for 4028T32P01: General Characteristics Item Description: 0.208 IN. MIN,0.218 IN. MAX LG,0.173 IN. MIN,0.175 IN. MAX W IN. 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 2840-00-042-6640 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.