FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Plate,retaining,shaft, cataloged under National Stock Number 3040-01-189-6633, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
3040-01-189-6633
Item Name
Plate,retaining,shaft
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Status
ACTIVE
Mounting Hole Quantity
6
Mounting Hole Diameter
3.250 INCHES NOMINAL IN
Shape
ROUND
Outside Diameter
3.750 INCHES NOMINAL IN
Aperture Diameter
2.563 INCHES NOMINAL IN
Material
COPPER ALLOY
Thickness
0.090 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.
3040-01-190-25582640-630X2 PIECE 3POSSIBLE MATCH
HEAD,LINEAR ACTUATING CYLINDER
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-190-25592640-630X2 PIECE 7POSSIBLE MATCH
ARM,ACTUATOR VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-190-59272640-630X2 PIECE 2POSSIBLE MATCH
CYLINDER,ACTUATING,LINEAR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-190-59282109872 PIECE 4POSSIBLE MATCH
PISTON,LINEAR ACTUATING CYLINDER
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
2640-630X2
D/9Drawing number reference only
U.S. Government activity
SS845-2109872 PIECE 12
5/2Secondary reference
U.S. Government activity
SS845-2109872
D/9Drawing number reference only
U.S. Government activity
2640-630X2 PIECE 12
3/2Design control — primary reference
U.S. Government activity
Related Parts
3040-01-190-2558POSSIBLE MATCH
HEAD,LINEAR ACTUATING CYLINDER
2640-630X2 PIECE 3
3010-01-190-2559POSSIBLE MATCH
ARM,ACTUATOR VALVE
2640-630X2 PIECE 7
3040-01-190-5927POSSIBLE MATCH
CYLINDER,ACTUATING,LINEAR
2640-630X2 PIECE 2
3040-01-190-5928POSSIBLE MATCH
PISTON,LINEAR ACTUATING CYLINDER
2109872 PIECE 4
Frequently Asked Questions
What is NSN 3040-01-189-6633?
NSN 3040-01-189-6633 is a Plate,retaining,shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What NSN replaces 3040-01-189-6633?
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-190-2558, 3010-01-190-2559, 3040-01-190-5927. Verify interchangeability with system specifications before substitution.
What are the specifications of 3040-01-189-6633?
Key specifications for 3040-01-189-6633: Mounting Hole Quantity: 6; Mounting Hole Diameter: 3.250 INCHES NOMINAL IN; Shape: ROUND; Outside Diameter: 3.750 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-189-6633 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.