PartsTable TECHNICAL DATA SHEET
NSN 3020-01-559-8773Government record, cited

Sprocket Shaft3020-01-559-8773

NSN 3020-01-559-8773 · NIIN 015598773 · Part number DS40A20
Martin Sprocket and Gear Inc · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 05506
Government record, cited
NSN 3020-01-559-8773 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-559-8773. Manufacturer of record part number: DS40A20.
Also searched as  3020-01-559-8773 · 3020015598773 · NIIN 015598773 · 01-559-8773 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 05506 · DS40A20
Nearby stock numbers  ·
Features
  • Sprocket Shaft — FSC 3020
  • Pitch Diameter: 3.1960 INCHES NOMINAL IN
  • Material: STEEL
  • 1 manufacturer part number on file
  • Manufacturer of record: Martin Sprocket and Gear Inc
Identification
  • NSN: 3020-01-559-8773
  • NIIN: 015598773
  • FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: DS40A20
  • Manufacturer: Martin Sprocket and Gear Inc
General Description

The Sprocket Shaft, cataloged under National Stock Number 3020-01-559-8773, 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 Martin Sprocket and Gear Inc. 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-559-8773
Primary Part NumberDS40A20
Item NameSprocket Shaft
FSC / FSG3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
ManufacturerMartin Sprocket and Gear Inc
StatusACTIVE
Pitch Diameter3.1960 INCHES NOMINAL IN
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
DS40A20 PRIMARY Martin Sprocket and Gear Inc (USA)
No interchangeability data on file.
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 3020-01-559-8773?

NSN 3020-01-559-8773 is a Sprocket Shaft, manufactured by Martin Sprocket and Gear Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What part numbers are listed for NSN 3020-01-559-8773?

NSN 3020-01-559-8773 has 1 manufacturer part number on file: DS40A20 (Martin Sprocket and Gear Inc).

What are the specifications of DS40A20?

Key specifications for DS40A20: Pitch Diameter: 3.1960 INCHES NOMINAL IN; End Item Identification: VALVE,VENT; Material: STEEL. 2 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-559-8773 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.
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