NSN 3020-01-596-0079 · NIIN 015960079 · Part number 6663K21
Mcmaster-Carr Supply Company · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 2V507
Government record, cited
NSN 3020-01-596-0079 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-596-0079. Manufacturer of record part number: 6663K21.
Also searched as3020-01-596-0079 ·
3020015960079 ·
NIIN 015960079 ·
01-596-0079 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 2V507 · 6663K21
Hub Outside Diameter: 0.375 INCHES NOMINAL BOTH ENDS IN
Tooth Pitch: 0.375 INCHES NOMINAL IN
Outside Diameter: 2.470 INCHES NOMINAL IN
Style Designator: PLAIN
Teeth Quantity Per Row: 19
Material: STEEL
Face Width: 0.375 INCHES NOMINAL IN
Identification
NSN: 3020-01-596-0079
NIIN: 015960079
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 6663K21
Manufacturer: Mcmaster-Carr Supply Company
General Description
The Sprocket Wheel, cataloged under National Stock Number 3020-01-596-0079, 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 Mcmaster-Carr Supply Company. Government technical data includes 7 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3020-01-596-0079
Primary Part Number
6663K21
Item Name
Sprocket Wheel
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091
GEAR,SPUR
3020-00-001-0027
3020-00-001-0027 · Item name not on file
3020-00-001-0028
3020-00-001-0028 · Item name not on file
3020-00-001-0063
3020-00-001-0063 · Item name not on file
3020-00-001-0064
3020-00-001-0064 · Item name not on file
3020-00-001-0066
3020-00-001-0066 · Item name not on file
3020-00-001-0071
3020-00-001-0071 · Item name not on file
3020-00-001-0072
3020-00-001-0072 · Item name not on file
Frequently Asked Questions
What is NSN 3020-01-596-0079?
NSN 3020-01-596-0079 is a Sprocket Wheel, manufactured by Mcmaster-Carr Supply Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-596-0079?
NSN 3020-01-596-0079 has 1 manufacturer part number on file: 6663K21 (Mcmaster-Carr Supply Company).
What are the specifications of 6663K21?
Key specifications for 6663K21: Hub Outside Diameter: 0.375 INCHES NOMINAL BOTH ENDS IN; Tooth Pitch: 0.375 INCHES NOMINAL IN; Outside Diameter: 2.470 INCHES NOMINAL IN; Style Designator: PLAIN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-596-0079 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.