NSN 3020-01-265-4098 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-265-4098. Manufacturer of record part number: 19987.
Also searched as3020-01-265-4098 ·
3020012654098 ·
NIIN 012654098 ·
01-265-4098 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 03798 · 19987
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 19987
Manufacturer: Westerbeke Corporation
General Description
The Pulley,groove, cataloged under National Stock Number 3020-01-265-4098, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Westerbeke Corporation. Government technical data includes 2 specifications, 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. 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
3020-01-265-4098
Primary Part Number
19987
Item Name
Pulley,groove
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Westerbeke Corporation
Status
ACTIVE
Groove Shape
V
Groove Quantity
1
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.
5998-01-432-338319987POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Giga-Tronics Incorporated Dba Giga-Tronics
5310-01-481-4946019987POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)Jacobs Mfg Co the
5325-01-701-853019987POSSIBLE MATCH
STUD,LOCK PIN FASTENER
Possible match (shared part number)Thomas Instrument, Incorporated
NSN 3020-01-265-4098 is a Pulley,groove, manufactured by Westerbeke Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-265-4098?
NSN 3020-01-265-4098 has 1 manufacturer part number on file: 19987 (Westerbeke Corporation).
What NSN replaces 3020-01-265-4098?
3 possible matches (shared part number, not a government interchangeability claim): 5998-01-432-3383, 5310-01-481-4946, 5325-01-701-8530. Verify interchangeability with system specifications before substitution.
What are the specifications of 19987?
Key specifications for 19987: Groove Shape: V; Groove Quantity: 1; End Item Identification: MODEL FOUR 108 FRESHWATER PUMP. 2 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-265-4098 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.