The Block,oil Transfer,turbine, cataloged under National Stock Number 2840-01-053-7742, 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 Allison Transmission Inc Dba Allison Transmission, Inc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-053-7742 |
| Primary Part Number | 6894178 |
| Item Name | Block,oil Transfer,turbine |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | O/A DIM. 3.317 IN. L,1.760 IN. W.,0.344 IN. THICKNESS,0.279 IN. MIN. 0.288 IN. MAX. DIA. THRU TWO HOLES,0.215 IN. MIN. 0.222 IN. MAX. DIA. THRU TWO HOLES GROVED,28 UNJF-3B THRU,0.250 IN. DIA. THRU ONE HOLE,0.200 IN. DEEP 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 |
| Part Number | Manufacturer |
|---|---|
| 6894178 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 2840-01-053-7742 is a Block,oil Transfer,turbine, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-053-7742 has 1 manufacturer part number on file: 6894178 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6894178: General Characteristics Item Description: O/A DIM. 3.317 IN. L,1.760 IN. W.,0.344 IN. THICKNESS,0.279 IN. MIN. 0.288 IN. MAX. DIA. THRU TWO HOLES,0.215 IN. MIN. 0.222 IN. MAX. DIA. THRU TWO HOLES GROVED,28 UNJF-3B THRU,0.250 IN. DIA. THRU ONE HOLE,0.200 IN. DEEP IN; End Item Identification: AIRCRAFT ENGINE T56-A-9B/C. 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 2840-01-053-7742 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.