NSN 3040-00-977-2798 · NIIN 009772798 · Part number 121450
Curtiss-Wright Electro-Mechanical Corporation Div Epd · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 0UBG9
Government record, cited
NSN 3040-00-977-2798 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-977-2798. Manufacturer of record part number: 121450.
Also searched as3040-00-977-2798 ·
3040009772798 ·
NIIN 009772798 ·
00-977-2798 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 0UBG9 · 121450
Distance From Center of Bore to Bottom of Keyway: 0.688 INCHES NOMINAL IN
Surface Treatment: PHOSPHATE
Bore Diameter: 1.1250 INCHES NOMINAL IN
Identification
NSN: 3040-00-977-2798
NIIN: 009772798
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 121450
Manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd
General Description
The Collar,shaft, cataloged under National Stock Number 3040-00-977-2798, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3040-00-977-2798
Primary Part Number
121450
Item Name
Collar,shaft
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Curtiss-Wright Electro-Mechanical Corporation Div Epd
Status
ACTIVE
Internal Keyway Width
0.250 INCHES NOMINAL IN
Style Designator
PLAIN ROUND
Outside Diameter
3.625 INCHES NOMINAL IN
Keyway Quantity
1
Distance From Center of Bore to Bottom of Keyway
0.688 INCHES NOMINAL IN
Surface Treatment
PHOSPHATE
Bore Diameter
1.1250 INCHES NOMINAL IN
Material
STEEL
Thickness
0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5950-01-080-1841121450POSSIBLE MATCH
REACTOR
Possible match (shared part number)Engineered Magnetics, Inc. Dba Engineered Magnetics
6150-01-414-1528121-450POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
Possible match (shared part number)Tricor Systems Inc
5325-01-440-6161121450POSSIBLE MATCH
RING,RETAINING
Possible match (shared part number)Aerco International, Inc. Dba Aerco International Inc
4720-01-481-7833121450-15POSSIBLE MATCH
TUBING,NONMETALLIC
Possible match (shared part number)L3harris Technologies, Inc. Div Space and Airborne Systems
NSN 3040-00-977-2798 is a Collar,shaft, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-00-977-2798?
NSN 3040-00-977-2798 has 2 manufacturer part numbers on file: 121450 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 121450 (Toolex, Inc Dba Toolex Inc).
What NSN replaces 3040-00-977-2798?
4 possible matches (shared part number, not a government interchangeability claim): 5950-01-080-1841, 6150-01-414-1528, 5325-01-440-6161. Verify interchangeability with system specifications before substitution.
What are the specifications of 121450?
Key specifications for 121450: Internal Keyway Width: 0.250 INCHES NOMINAL IN; Style Designator: PLAIN ROUND; Outside Diameter: 3.625 INCHES NOMINAL IN; Keyway Quantity: 1. 9 specifications are documented in the U.S. Government catalog.
Is NSN 3040-00-977-2798 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.
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.