FSC: 2240 — Locomotive and Rail Car Accessories and Components
FSG: 22 — Railway Equipment
General Description
The Coupler,railway,automatic, cataloged under National Stock Number 2240-00-377-1851, is classified within Federal Supply Class 2240 (Locomotive and Rail Car Accessories and Components) of the Railway Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
2240-00-377-1851
Item Name
Coupler,railway,automatic
FSC / FSG
2240 / 22 — Locomotive and Rail Car Accessories and Components
Status
ACTIVE
Commercial Designation
WILLISON, TYPE E
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-00-787-909237043POSSIBLE MATCH
SHAFT,ACTUATOR
Possible match (shared part number)Hydro-Aire Aerospace Corp
5835-00-891-278437043POSSIBLE MATCH
CLUTCH DRUM
Possible match (shared part number)Cec Vibration Products, Llc Dba Cec Vibrations Products
5330-01-009-700399137043POSSIBLE MATCH
RING RUBBER
Possible match (shared part number)Alfa Laval Inc
6515-01-477-471137043POSSIBLE MATCH
TROCAR KIT
Possible match (shared part number)Imagyn Surgical
5860-01-673-029437-043POSSIBLE MATCH
ALIGNMENT FIXTURE,LASER
Possible match (shared part number)Edmund Optics, Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
37043
3/9Design control — primary reference
Midland-Ross Corp National Castings Div
Related Parts
3040-00-787-9092POSSIBLE MATCH
SHAFT,ACTUATOR
37043
5835-00-891-2784POSSIBLE MATCH
CLUTCH DRUM
37043
5330-01-009-7003POSSIBLE MATCH
RING RUBBER
99137043
6515-01-477-4711POSSIBLE MATCH
TROCAR KIT
37043
5860-01-673-0294POSSIBLE MATCH
ALIGNMENT FIXTURE,LASER
37-043
Frequently Asked Questions
What is NSN 2240-00-377-1851?
NSN 2240-00-377-1851 is a Coupler,railway,automatic, classified under FSC 2240, Locomotive and Rail Car Accessories and Components. Status: active.
What NSN replaces 2240-00-377-1851?
5 possible matches (shared part number, not a government interchangeability claim): 3040-00-787-9092, 5835-00-891-2784, 5330-01-009-7003. Verify interchangeability with system specifications before substitution.
What are the specifications of 2240-00-377-1851?
Key specifications for 2240-00-377-1851: Commercial Designation: WILLISON, TYPE E. 1 specification is documented in the U.S. Government catalog.
Is NSN 2240-00-377-1851 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.