PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51508Gear,spur

Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging · NSN 3020-00-528-1260 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-528-1260 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-528-1260. Primary manufacturer part number: 51508.
Features
  • Gear,spur — FSC 3020
  • Hub Style Designator: PLAIN FIRST END
  • Nominal Overall Length: 0.170 INCHES IN
  • Pressure Angle: 20.0000 DEGREES
  • Bore Nominal Diameter: 0.312 INCHES BOTH ENDS IN
  • Material: STEEL COMP 4620 OVERALL
  • Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
  • Keyway Nominal Width: 0.095 INCHES BOTH ENDS IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4620 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-528-1260, 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 20 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-528-1260
Primary Part Number51508
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSafran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
StatusACTIVE
Hub Style DesignatorPLAIN FIRST END
Nominal Overall Length0.170 INCHES IN
Pressure Angle20.0000 DEGREES
Bore Nominal Diameter0.312 INCHES BOTH ENDS IN
MaterialSTEEL COMP 4620 OVERALL
Hardness Rating25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
Keyway Nominal Width0.095 INCHES BOTH ENDS IN
Nominal Distance From Bore Center to Keyway Bottom0.224 INCHES BOTH ENDS IN
Pitch Diameter0.7500 INCHES NOMINAL IN
Body StylePLAIN, SOLID
Teeth Quantity48
Style DesignatorPROTRUDING HUB
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Bore StyleW/ KEYWAY BOTH ENDS
Tooth FormSTANDARD
Face Nominal Width0.093 INCHES IN
Surface TreatmentPHOSPHATE OVERALL
Nominal Distance Between Body Face and Protruding Hub End0.080 INCHES FIRST END IN
Nominal Outside Diameter0.781 INCHES IN
Hub Nominal Diameter0.500 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1630-00-764-437751508 INTERCHANGEABLE
Rod,shouldered
Hydro-Aire Aerospace Corp
5120-00-781-0819 INTERCHANGEABLE
Pliers,slip Joint
5120-01-428-5117 INTERCHANGEABLE
Hammer,hand
Cross-Reference Index
Part NumberManufacturer
51508 PRIMARY Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging (USA)
Related Parts
1630-00-764-4377INTERCHANGEABLE
ROD,SHOULDERED
51508
5120-00-781-0819INTERCHANGEABLE
PLIERS,SLIP JOINT
5120-01-428-5117INTERCHANGEABLE
HAMMER,HAND

Frequently Asked Questions

What is NSN 3020-00-528-1260?

NSN 3020-00-528-1260 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 3020-00-528-1260?

NSN 3020-00-528-1260 has 1 cross-referenced part number: 51508 (Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging).

What NSN replaces 3020-00-528-1260?

There are 3 known substitutes for 3020-00-528-1260: 1630-00-764-4377, 5120-00-781-0819, 5120-01-428-5117. Verify interchangeability with system specifications before substitution.

What are the specifications of 51508?

Key specifications for 51508: Hub Style Designator: PLAIN FIRST END; Nominal Overall Length: 0.170 INCHES IN; Pressure Angle: 20.0000 DEGREES; Bore Nominal Diameter: 0.312 INCHES BOTH ENDS IN. 20 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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