NSN 3040-01-233-0802 · NIIN 012330802 · Part number 18641-A
Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 32356
Government record, cited
NSN 3040-01-233-0802 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-233-0802. Manufacturer of record part number: 18641-A.
Also searched as3040-01-233-0802 ·
3040012330802 ·
NIIN 012330802 ·
01-233-0802 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 32356 · 18641-A · H-3074-D
Manufacturer of record: Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
Identification
NSN: 3040-01-233-0802
NIIN: 012330802
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 18641-A
Manufacturer: Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
General Description
The Collar,shaft, cataloged under National Stock Number 3040-01-233-0802, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Johnston Pump Co Inc Div of Johnston Pump/general Valve 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
3040-01-233-0802
Primary Part Number
18641-A
Item Name
Collar,shaft
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
Status
ACTIVE
Material
NICKEL ALLOY
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-233-080321752-APOSSIBLE MATCH
COLLAR,SHAFT
Possible match (shared part number)Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
3040-01-233-343919568-APOSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
3040-01-233-344019569-APOSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
3040-01-234-485721776-APOSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
3040-01-234-485821754-1APOSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc (USA)
Reference documents
Reference
Meaning
H-3074-D
D/9Drawing number reference only
Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc
Related Parts
3040-01-233-0803POSSIBLE MATCH
COLLAR,SHAFT
21752-A
3040-01-233-3439POSSIBLE MATCH
SHAFT,STRAIGHT
19568-A
3040-01-233-3440POSSIBLE MATCH
SHAFT,STRAIGHT
19569-A
3040-01-234-4857POSSIBLE MATCH
SHAFT,STRAIGHT
21776-A
3040-01-234-4858POSSIBLE MATCH
SHAFT,STRAIGHT
21754-1A
Frequently Asked Questions
What is NSN 3040-01-233-0802?
NSN 3040-01-233-0802 is a Collar,shaft, manufactured by Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-01-233-0802?
NSN 3040-01-233-0802 has 1 manufacturer part number on file: 18641-A (Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc).
What NSN replaces 3040-01-233-0802?
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-233-0803, 3040-01-233-3439, 3040-01-233-3440. Verify interchangeability with system specifications before substitution.
What are the specifications of 18641-A?
Key specifications for 18641-A: Material: NICKEL ALLOY. 1 specification is documented in the U.S. Government catalog.
Is NSN 3040-01-233-0802 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.