PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51518Gear,spur

Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging · NSN 3020-00-528-1249 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-528-1249 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-528-1249. Primary manufacturer part number: 51518.
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 40
  • Bore Nominal Diameter: 0.226 INCHES BOTH ENDS IN
  • Bore Style: INVOLUTE SPLINE BOTH ENDS
  • Nominal Outside Diameter: 1.310 INCHES IN
  • Material: STEEL COMP 303 OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Spline Quantity: 9 BOTH ENDS
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-528-1249, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging. Government technical data includes 16 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-528-1249
Primary Part Number51518
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSafran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
StatusACTIVE
Teeth Quantity40
Bore Nominal Diameter0.226 INCHES BOTH ENDS IN
Bore StyleINVOLUTE SPLINE BOTH ENDS
Nominal Outside Diameter1.310 INCHES IN
MaterialSTEEL COMP 303 OVERALL
Surface TreatmentPASSIVATE OVERALL
Spline Quantity9 BOTH ENDS
Style DesignatorHUBLESS
Tooth FormSTANDARD
Material Document and ClassificationMIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Backlash DesignationGRADE B
Spline Pitch Diameter0.2250 INCHES NOMINAL BOTH ENDS IN
Face Nominal Width0.125 INCHES IN
Pitch Diameter1.2500 INCHES NOMINAL IN
Pressure Angle20.0000 DEGREES
Body StylePLAIN, SOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2940-00-633-491151518 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5905-00-890-43495351-072 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Raytheon Company Div Rmd Strategic
5950-01-340-616251518 INTERCHANGEABLE
Coil,electrical
Columbus Mckinnon Corp
5120-01-428-513651-518 INTERCHANGEABLE
Hammer,hand
The Stanley Works Dba Stanley Proto
5340-01-621-349151518 INTERCHANGEABLE
Shield,expansion
Fastenal Company Div Fastenal-Hvga
Cross-Reference Index
Part NumberManufacturer
51518 PRIMARY Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging (USA)
Related Parts
2940-00-633-4911INTERCHANGEABLE
FILTER ELEMENT,FLUID
51518
5905-00-890-4349INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5351-072
5950-01-340-6162INTERCHANGEABLE
COIL,ELECTRICAL
51518
5120-01-428-5136INTERCHANGEABLE
HAMMER,HAND
51-518
5340-01-621-3491INTERCHANGEABLE
SHIELD,EXPANSION
51518

Frequently Asked Questions

What is NSN 3020-00-528-1249?

NSN 3020-00-528-1249 is a Gear,spur, manufactured by Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-528-1249?

NSN 3020-00-528-1249 has 1 cross-referenced part number: 51518 (Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging).

What NSN replaces 3020-00-528-1249?

There are 5 known substitutes for 3020-00-528-1249: 2940-00-633-4911, 5905-00-890-4349, 5950-01-340-6162 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51518?

Key specifications for 51518: Teeth Quantity: 40; Bore Nominal Diameter: 0.226 INCHES BOTH ENDS IN; Bore Style: INVOLUTE SPLINE BOTH ENDS; Nominal Outside Diameter: 1.310 INCHES IN. 16 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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