NSN 2840-01-078-6044 · NIIN 010786044 · Part number 6898784AL
Extex Engineered Products Inc Dba Timken Aerospace Services · FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components · FSG 28 — Engines, Turbines, and Components · CAGE 1L9D9
Government record, cited
NSN 2840-01-078-6044 — this item is cataloged by the U.S. Government under National Stock Number 2840-01-078-6044. Manufacturer of record part number: 6898784AL.
Also searched as2840-01-078-6044 ·
2840010786044 ·
NIIN 010786044 ·
01-078-6044 ·
FSC 2840 Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components · CAGE 1L9D9 · 6898784AL · 6898784 · 6898784
Nearby stock numbers← 2840-01-078-5340 Cone, Exhaust Aircraft Gas Turbin
·
2840-01-078-6103 Shield, Heat, Aircraft Gas Turbine →
Features
Adapter,splined,turbine — FSC 2840
General Characteristics Item Description: STEEL EMS 64500,FSCM 73342,1.145 IN. MIN,1.155 IN. MAX O/A LG,ONE END EXTERNAL SPLINE,24 TEETH,0.776 IN. MIN,0.781 IN. MAX OD,0.750 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,INTERNAL SPLINE,17 TEETH,0.500 IN. MIN,0.505 IN. MAX ID,0.5313 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,OTHER END,0.776 IN. MIN,0.781 IN. MAX ID,4 SLOTS EQUALLY SPACED AROUND OD IN
The Adapter,splined,turbine, cataloged under National Stock Number 2840-01-078-6044, 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 Extex Engineered Products Inc Dba Timken Aerospace Services. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2840-01-078-6044
Primary Part Number
6898784AL
Item Name
Adapter,splined,turbine
FSC / FSG
2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
STEEL EMS 64500,FSCM 73342,1.145 IN. MIN,1.155 IN. MAX O/A LG,ONE END EXTERNAL SPLINE,24 TEETH,0.776 IN. MIN,0.781 IN. MAX OD,0.750 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,INTERNAL SPLINE,17 TEETH,0.500 IN. MIN,0.505 IN. MAX ID,0.5313 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,OTHER END,0.776 IN. MIN,0.781 IN. MAX ID,4 SLOTS EQUALLY SPACED AROUND OD IN
Other items in FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2840-00-004-4242
2840-00-004-4242 · Item name not on file
2840-00-021-4702
PLATE,RETAINING,TUB
2840-00-043-0981
BRACKET ASSEMBLY,TUBING
2840-00-043-0982
BRACKET ASSEMBLY,TUBING
2840-00-048-5261
2840-00-048-5261 · Item name not on file
2840-00-407-9165
DIPSTICK,ENGINE
2840-01-171-0875
SEAL,FUEL
2840-01-171-0875
SEAL,FUEL
Frequently Asked Questions
What is NSN 2840-01-078-6044?
NSN 2840-01-078-6044 is a Adapter,splined,turbine, manufactured by Extex Engineered Products Inc Dba Timken Aerospace Services, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
What part numbers are listed for NSN 2840-01-078-6044?
NSN 2840-01-078-6044 has 3 manufacturer part numbers on file: 6898784AL (Extex Engineered Products Inc Dba Timken Aerospace Services), 6898784 (Allison Transmission Inc Dba Allison Transmission, Inc), 6898784 (Rolls-Royce Corporation).
What are the specifications of 6898784AL?
Key specifications for 6898784AL: General Characteristics Item Description: STEEL EMS 64500,FSCM 73342,1.145 IN. MIN,1.155 IN. MAX O/A LG,ONE END EXTERNAL SPLINE,24 TEETH,0.776 IN. MIN,0.781 IN. MAX OD,0.750 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,INTERNAL SPLINE,17 TEETH,0.500 IN. MIN,0.505 IN. MAX ID,0.5313 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,OTHER END,0.776 IN. MIN,0.781 IN. MAX ID,4 SLOTS EQUALLY SPACED AROUND OD IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 2840-01-078-6044 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 2840-01-078-6044?
NSN 2840-01-078-6044 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.