PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51672Gear,spur

Ambac International Corporation Div Ambac International · NSN 3020-00-517-1701 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-517-1701 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-517-1701. Primary manufacturer part number: 51672.
Features
  • Gear,spur — FSC 3020
  • Pressure Angle: 14.5000 DEGREES
  • Pitch Diameter: 1.7500 INCHES NOMINAL IN
  • Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN
  • Nominal Outside Diameter: 1.792 INCHES IN
  • Tooth Form: STANDARD
  • Hub Nominal Diameter: 0.312 INCHES FIRST END IN
  • Body Style: PLAIN, WITH LIGHTENING HOLES
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-517-1701, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Ambac International Corporation Div Ambac International. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN3020-00-517-1701
Primary Part Number51672
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerAmbac International Corporation Div Ambac International
StatusACTIVE
Pressure Angle14.5000 DEGREES
Pitch Diameter1.7500 INCHES NOMINAL IN
Bore Nominal Diameter0.125 INCHES BOTH ENDS IN
Nominal Outside Diameter1.792 INCHES IN
Tooth FormSTANDARD
Hub Nominal Diameter0.312 INCHES FIRST END IN
Body StylePLAIN, WITH LIGHTENING HOLES
Face Nominal Width0.094 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.187 INCHES FIRST END IN
Nominal Overall Length0.281 INCHES IN
Style DesignatorPROTRUDING HUB
MaterialALUMINUM ALLOY OVERALL
Teeth Quantity84
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
7510-00-789-245551672 INTERCHANGEABLE
Calendar Board,wall
Superintendent of Documents Government Printing Office
5935-01-250-84495167-2 INTERCHANGEABLE
Jack,tip
Fluke Electronics Corp
Cross-Reference Index
Part NumberManufacturer
51672 Ambac International Corporation Div Ambac International (USA)
51672 Compass Microwave Inc (USA)
51672 Cub Co (USA)
51672 Gyro Systems Co Inc (USA)
Related Parts
7510-00-789-2455INTERCHANGEABLE
CALENDAR BOARD,WALL
51672
5935-01-250-8449INTERCHANGEABLE
JACK,TIP
5167-2

Frequently Asked Questions

What is NSN 3020-00-517-1701?

NSN 3020-00-517-1701 is a Gear,spur, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-517-1701?

NSN 3020-00-517-1701 has 4 cross-referenced part numbers: 51672 (Ambac International Corporation Div Ambac International), 51672 (Compass Microwave Inc), 51672 (Cub Co), 51672 (Gyro Systems Co Inc).

What NSN replaces 3020-00-517-1701?

There are 2 known substitutes for 3020-00-517-1701: 7510-00-789-2455, 5935-01-250-8449. Verify interchangeability with system specifications before substitution.

What are the specifications of 51672?

Key specifications for 51672: Pressure Angle: 14.5000 DEGREES; Pitch Diameter: 1.7500 INCHES NOMINAL IN; Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Nominal Outside Diameter: 1.792 INCHES IN. 13 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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