PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21917Gear,spur

Komatsu America Corporation · NSN 3020-00-163-2470 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-163-2470 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-163-2470. Primary manufacturer part number: 21917.
Features
  • Gear,spur — FSC 3020
  • Nominal Overall Length: 3.625 INCHES IN
  • Tooth Form: STANDARD
  • Face Nominal Width: 1.375 INCHES IN
  • Pitch Diameter: 16.0000 INCHES NOMINAL IN
  • Teeth Quantity: 40
  • Pressure Angle: 20.0000 DEGREES
  • Style Designator: ONE PROTRUDING HUB, ONE FLUSH HUB
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-163-2470, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Komatsu America Corporation. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-163-2470
Primary Part Number21917
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerKomatsu America Corporation
StatusACTIVE
Nominal Overall Length3.625 INCHES IN
Tooth FormSTANDARD
Face Nominal Width1.375 INCHES IN
Pitch Diameter16.0000 INCHES NOMINAL IN
Teeth Quantity40
Pressure Angle20.0000 DEGREES
Style DesignatorONE PROTRUDING HUB, ONE FLUSH HUB
MaterialSTEEL OVERALL
Body StyleWEBBED, OFFSET, SOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4730-00-279-035312Z8000-5 INTERCHANGEABLE
Fitting,lubrication
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4010-00-951-5426 INTERCHANGEABLE
Rope,wire
5950-00-992-6586 INTERCHANGEABLE
Transformer,audio Frequency
4460-01-042-9122 INTERCHANGEABLE
Baseplate,filter Cannister
5360-01-189-346621917 INTERCHANGEABLE
Spring
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5961-01-444-761221917 INTERCHANGEABLE
Semiconductor Device,diode
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Cross-Reference Index
Part NumberManufacturer
21917 PRIMARY Komatsu America Corporation (USA)
R21917 Komatsu America Corporation (USA)
Related Parts
4730-00-279-0353INTERCHANGEABLE
FITTING,LUBRICATION
12Z8000-5
4010-00-951-5426INTERCHANGEABLE
ROPE,WIRE
5950-00-992-6586INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
4460-01-042-9122INTERCHANGEABLE
BASEPLATE,FILTER CANNISTER
5360-01-189-3466INTERCHANGEABLE
SPRING
21917
5961-01-444-7612INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
21917

Frequently Asked Questions

What is NSN 3020-00-163-2470?

NSN 3020-00-163-2470 is a Gear,spur, manufactured by Komatsu America Corporation, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-163-2470?

NSN 3020-00-163-2470 has 2 cross-referenced part numbers: 21917 (Komatsu America Corporation), R21917 (Komatsu America Corporation).

What NSN replaces 3020-00-163-2470?

There are 6 known substitutes for 3020-00-163-2470: 4730-00-279-0353, 4010-00-951-5426, 5950-00-992-6586 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21917?

Key specifications for 21917: Nominal Overall Length: 3.625 INCHES IN; Tooth Form: STANDARD; Face Nominal Width: 1.375 INCHES IN; Pitch Diameter: 16.0000 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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