NSN 3950-01-424-6171 — this item is cataloged by the U.S. Government under National Stock Number 3950-01-424-6171. Manufacturer of record part number: 6665643.
Also searched as3950-01-424-6171 ·
3950014246171 ·
NIIN 014246171 ·
01-424-6171 ·
FSC 3950 Winches, Hoists, Cranes, and Derricks · CAGE 53711 · 6665643
The Trolley Sheave Assm, cataloged under National Stock Number 3950-01-424-6171, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 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
3950-01-424-6171
Primary Part Number
6665643
Item Name
Trolley Sheave Assm
FSC / FSG
3950 / 39 — Winches, Hoists, Cranes, and Derricks
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
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 Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3950-01-424-68376919009POSSIBLE MATCH
ROLLER,GUIDE
Possible match (shared part number)Naval Sea Systems Command
3950-01-424-68426665648POSSIBLE MATCH
ROLLER,GUIDE
Possible match (shared part number)Naval Sea Systems Command
3020-01-424-9798MO481017POSSIBLE MATCH
PULLEY,GROOVE
Possible match (shared part number)The Crosby Group Llc Dba the Crosby Group
NSN 3950-01-424-6171 is a Trolley Sheave Assm, manufactured by Naval Sea Systems Command, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
What part numbers are listed for NSN 3950-01-424-6171?
NSN 3950-01-424-6171 has 1 manufacturer part number on file: 6665643 (Naval Sea Systems Command).
What NSN replaces 3950-01-424-6171?
3 possible matches (shared part number, not a government interchangeability claim): 3950-01-424-6837, 3950-01-424-6842, 3020-01-424-9798. Verify interchangeability with system specifications before substitution.
What are the specifications of 6665643?
Key specifications for 6665643: End Item Identification: NAVY WEAPON SYSTEM CODE JT CIMMARON CLASS AO. 0 specifications are documented in the U.S. Government catalog.
Is NSN 3950-01-424-6171 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.