PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

512923Gear,spur

Honeywell International, Inc Div Aerospace-Tucson · NSN 3020-00-027-5651 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-027-5651 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-027-5651. Primary manufacturer part number: 512923.
Features
  • Gear,spur — FSC 3020
  • Tooth Form: STANDARD
  • Mounting Hole Thread Quantity Per Inch: 80 TRANSVERSELY THROUGH HUB FIRST END
  • Face Nominal Width: 0.065 INCHES IN
  • Material Document and Classification: MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Distance Between Body Face and Protruding Hub End: 0.165 INCHES FIRST END IN
  • Style Designator: PROTRUDING HUB
  • Hub Nominal Diameter: 0.250 INCHES FIRST END IN
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 3020-00-027-5651, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-027-5651
Primary Part Number512923
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerHoneywell International, Inc Div Aerospace-Tucson
StatusACTIVE
Tooth FormSTANDARD
Mounting Hole Thread Quantity Per Inch80 TRANSVERSELY THROUGH HUB FIRST END
Face Nominal Width0.065 INCHES IN
Material Document and ClassificationMIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Distance Between Body Face and Protruding Hub End0.165 INCHES FIRST END IN
Style DesignatorPROTRUDING HUB
Hub Nominal Diameter0.250 INCHES FIRST END IN
MaterialSTEEL COMP 303 OVERALL
Bore Nominal Diameter0.125 INCHES BOTH ENDS IN
Nominal Outside Diameter0.385 INCHES IN
Pressure Angle20.0000 DEGREES
Mounting Hole Type and Quantity1 THREADED TRANSVERSELY THROUGH HUB FIRST END
Nominal Overall Length0.230 INCHES IN
Body StylePLAIN, SOLID
Mounting Hole Thread Series DesignatorUNF TRANSVERSELY THROUGH HUB FIRST END
Attachment MethodMOUNTING HOLE
Pitch Diameter0.3640 INCHES NOMINAL IN
Teeth Quantity35
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5315-00-176-6821MS51923-132 INTERCHANGEABLE
Pin,spring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5905-00-962-0538 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Cross-Reference Index
Part NumberManufacturer
512923 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
512923 PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
512923 Honeywell International Inc. Div Aerospace - Torrance (USA)
Related Parts
5315-00-176-6821INTERCHANGEABLE
PIN,SPRING
MS51923-132
5905-00-962-0538INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON

Frequently Asked Questions

What is NSN 3020-00-027-5651?

NSN 3020-00-027-5651 is a Gear,spur, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-027-5651?

NSN 3020-00-027-5651 has 3 cross-referenced part numbers: 512923 (Alliedsignal Inc Dba Allied-Signal Aerospace Co), 512923 (Honeywell International, Inc Div Aerospace-Tucson), 512923 (Honeywell International Inc. Div Aerospace - Torrance).

What NSN replaces 3020-00-027-5651?

There are 2 known substitutes for 3020-00-027-5651: 5315-00-176-6821, 5905-00-962-0538. Verify interchangeability with system specifications before substitution.

What are the specifications of 512923?

Key specifications for 512923: Tooth Form: STANDARD; Mounting Hole Thread Quantity Per Inch: 80 TRANSVERSELY THROUGH HUB FIRST END; Face Nominal Width: 0.065 INCHES IN; Material Document and Classification: MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 18 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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