PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

85266-01Gear,internal

Safran Power Usa Llc · NSN 3020-00-326-4016 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-326-4016 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-326-4016. Primary manufacturer part number: 85266-01.
Features
  • Gear,internal — FSC 3020
  • Mounting Hole Thread Quantity Per Inch: 32 TRANSVERSELY THROUGH HUB FIRST END
  • Mounting Hole Type and Quantity: 6 THREADED TRANSVERSELY THROUGH HUB FIRST END
  • Pitch Diameter: 1.2666 INCHES NOMINAL IN
  • Teeth Quantity: 76
  • Backlash Designation: GRADE C
  • Pressure Angle: 20.0000 DEGREES
  • Surface Treatment: OXIDE OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4140 Overall construction
General Description

The Gear,internal, cataloged under National Stock Number 3020-00-326-4016, 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 Power Usa Llc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-326-4016
Primary Part Number85266-01
Item NameGear,internal
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSafran Power Usa Llc
StatusACTIVE
Mounting Hole Thread Quantity Per Inch32 TRANSVERSELY THROUGH HUB FIRST END
Mounting Hole Type and Quantity6 THREADED TRANSVERSELY THROUGH HUB FIRST END
Pitch Diameter1.2666 INCHES NOMINAL IN
Teeth Quantity76
Backlash DesignationGRADE C
Pressure Angle20.0000 DEGREES
Surface TreatmentOXIDE OVERALL
Attachment MethodMOUNTING HOLE
Material Document and ClassificationMIL-S-5626,COMP 4140 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Body StylePLAIN, SOLID
MaterialSTEEL COMP 4140 OVERALL
Mounting Hole Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END
Nominal Outside Diameter1.486 INCHES IN
Teeth TypeSPUR
Style DesignatorPLAIN RING
Face Nominal Width1.191 INCHES IN
Mounting Hole Nominal Thread Size0.138 INCHES TRANSVERSELY THROUGH HUB FIRST END IN
Hardness Rating30.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4810-00-613-28578526601 INTERCHANGEABLE
Valve,seat
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
85266-01 Safran Power Usa Llc (USA)
85266-01 Lucas Aerospace Power Equipment Corporation (USA)
Related Parts
4810-00-613-2857INTERCHANGEABLE
VALVE,SEAT
8526601

Frequently Asked Questions

What is NSN 3020-00-326-4016?

NSN 3020-00-326-4016 is a Gear,internal, manufactured by Safran Power Usa Llc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-326-4016?

NSN 3020-00-326-4016 has 2 cross-referenced part numbers: 85266-01 (Safran Power Usa Llc), 85266-01 (Lucas Aerospace Power Equipment Corporation).

What NSN replaces 3020-00-326-4016?

There is 1 known substitute for 3020-00-326-4016: 4810-00-613-2857. Verify interchangeability with system specifications before substitution.

What are the specifications of 85266-01?

Key specifications for 85266-01: Mounting Hole Thread Quantity Per Inch: 32 TRANSVERSELY THROUGH HUB FIRST END; Mounting Hole Type and Quantity: 6 THREADED TRANSVERSELY THROUGH HUB FIRST END; Pitch Diameter: 1.2666 INCHES NOMINAL IN; Teeth Quantity: 76. 19 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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