PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15639Gear,spur

Grimes Aerospace Company · NSN 3020-00-749-8914 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-749-8914 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-749-8914. Primary manufacturer part number: 15639.
Features
  • Gear,spur — FSC 3020
  • Body Style: PLAIN, SOLID
  • Style Designator: PROTRUDING HUBS
  • Face Nominal Width: 0.180 INCHES IN
  • Hub Style Designator: PLAIN BOTH ENDS
  • Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN
  • Bore Style: PLAIN BOTH ENDS
  • Tooth Form: STUB
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 3020-00-749-8914, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Grimes Aerospace Company. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-749-8914
Primary Part Number15639
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerGrimes Aerospace Company
StatusACTIVE
Body StylePLAIN, SOLID
Style DesignatorPROTRUDING HUBS
Face Nominal Width0.180 INCHES IN
Hub Style DesignatorPLAIN BOTH ENDS
Bore Nominal Diameter0.125 INCHES BOTH ENDS IN
Bore StylePLAIN BOTH ENDS
Tooth FormSTUB
Nominal Outside Diameter0.487 INCHES IN
Pressure Angle20.0000 DEGREES
Pitch Diameter0.4375 INCHES NOMINAL IN
Bore Nominal Depth0.125 INCHES BOTH ENDS IN
Nominal Distance Between Body Face and Protruding Hub End0.538 INCHES SECOND END IN
MaterialSTEEL OVERALL
Nominal Overall Length0.905 INCHES IN
Teeth Quantity14
Hub Nominal Diameter0.260 INCHES SECOND END IN
Hub Nominal Diameter0.260 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2530-00-353-0408220353 INTERCHANGEABLE
Valve,relay,air Pressure
Crane Co Div Valve Div
5330-00-733-0675 INTERCHANGEABLE
Gasket
5962-01-069-6180 INTERCHANGEABLE
Microcircuit,linear
4320-01-439-05850015639 INTERCHANGEABLE
Parts Kit,rotary Pump
Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division
Cross-Reference Index
Part NumberManufacturer
15639 PRIMARY Grimes Aerospace Company (USA)
Related Parts
2530-00-353-0408INTERCHANGEABLE
VALVE,RELAY,AIR PRESSURE
220353
5330-00-733-0675INTERCHANGEABLE
GASKET
5962-01-069-6180INTERCHANGEABLE
MICROCIRCUIT,LINEAR
4320-01-439-0585INTERCHANGEABLE
PARTS KIT,ROTARY PUMP
0015639

Frequently Asked Questions

What is NSN 3020-00-749-8914?

NSN 3020-00-749-8914 is a Gear,spur, manufactured by Grimes Aerospace Company, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-749-8914?

NSN 3020-00-749-8914 has 1 cross-referenced part number: 15639 (Grimes Aerospace Company).

What NSN replaces 3020-00-749-8914?

There are 4 known substitutes for 3020-00-749-8914: 2530-00-353-0408, 5330-00-733-0675, 5962-01-069-6180 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15639?

Key specifications for 15639: Body Style: PLAIN, SOLID; Style Designator: PROTRUDING HUBS; Face Nominal Width: 0.180 INCHES IN; Hub Style Designator: PLAIN BOTH ENDS. 17 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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