PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14128Gear,antibacklash,spur

Scientific Atlanta Inc · NSN 3020-00-189-5366 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-189-5366 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-189-5366. Primary manufacturer part number: 14128.
Features
  • Gear,antibacklash,spur — FSC 3020
  • Bore Nominal Diameter: 0.239 INCHES BOTH ENDS IN
  • Pitch Diameter: 2.8220 INCHES NOMINAL IN
  • Nominal Outside Diameter: 2.8430 INCHES IN
  • Face Nominal Width: 0.118 INCHES IN
  • Hub Nominal Diameter: 0.313 INCHES FIRST END IN
  • Style Designator: PROTRUDING HUB
  • Nominal Distance Between Body Face and Protruding Hub End: 0.300 INCHES FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Overall construction
General Description

The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-189-5366, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Scientific Atlanta Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-189-5366
Primary Part Number14128
Item NameGear,antibacklash,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerScientific Atlanta Inc
StatusACTIVE
Bore Nominal Diameter0.239 INCHES BOTH ENDS IN
Pitch Diameter2.8220 INCHES NOMINAL IN
Nominal Outside Diameter2.8430 INCHES IN
Face Nominal Width0.118 INCHES IN
Hub Nominal Diameter0.313 INCHES FIRST END IN
Style DesignatorPROTRUDING HUB
Nominal Distance Between Body Face and Protruding Hub End0.300 INCHES FIRST END IN
Tooth FormSTANDARD
MaterialALUMINUM OVERALL
Clamping Surface Nominal Length0.218 INCHES FIRST END IN
Bore StylePLAIN BOTH ENDS
Hub Style DesignatorSPLIT FIRST END
Teeth Quantity179
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6620-00-006-6418 INTERCHANGEABLE
Gage,pressure,dial Indicating
5940-00-177-44441412-8 INTERCHANGEABLE
Terminal,lug
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5330-00-251-8859A14128 INTERCHANGEABLE
Gasket
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6150-00-295-75957527 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense
5120-00-473-77417076229 INTERCHANGEABLE
Wrench,socket
U S Army Tank Automotive Command Amsta-Im-Mm
4720-00-947-679914128 INTERCHANGEABLE
Hose Assembly,metallic
Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
6520-01-205-243414128 INTERCHANGEABLE
File,pulp Canal,dental
Kerr Corporation
4720-01-312-768814128A INTERCHANGEABLE
Hose Assembly,nonmetallic
Liftking Manufacturing Corp
4920-01-562-695614128 INTERCHANGEABLE
Caster,swivel,aircr
Aerol Co
2590-01-577-324314128-1 INTERCHANGEABLE
Junction,actuation,
Amerex Corporation Dba Amerex Corp
Cross-Reference Index
Part NumberManufacturer
14128 Scientific Atlanta Inc (USA)
014128 Mi Technologies, Llc (USA)
14128A Scientific Atlanta Inc (USA)
Related Parts
6620-00-006-6418INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5940-00-177-4444INTERCHANGEABLE
TERMINAL,LUG
1412-8
5330-00-251-8859INTERCHANGEABLE
GASKET
A14128
6150-00-295-7595INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
7527
5120-00-473-7741INTERCHANGEABLE
WRENCH,SOCKET
7076229
4720-00-947-6799INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
14128
6520-01-205-2434INTERCHANGEABLE
FILE,PULP CANAL,DENTAL
14128
4720-01-312-7688INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
14128A
4920-01-562-6956INTERCHANGEABLE
CASTER,SWIVEL,AIRCR
14128
2590-01-577-3243INTERCHANGEABLE
JUNCTION,ACTUATION,
14128-1
5120-01-661-6283INTERCHANGEABLE
CLAMP,C
14128

Frequently Asked Questions

What is NSN 3020-00-189-5366?

NSN 3020-00-189-5366 is a Gear,antibacklash,spur, manufactured by Scientific Atlanta Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-189-5366?

NSN 3020-00-189-5366 has 3 cross-referenced part numbers: 14128 (Scientific Atlanta Inc), 014128 (Mi Technologies, Llc), 14128A (Scientific Atlanta Inc).

What NSN replaces 3020-00-189-5366?

There are 11 known substitutes for 3020-00-189-5366: 6620-00-006-6418, 5940-00-177-4444, 5330-00-251-8859 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14128?

Key specifications for 14128: Bore Nominal Diameter: 0.239 INCHES BOTH ENDS IN; Pitch Diameter: 2.8220 INCHES NOMINAL IN; Nominal Outside Diameter: 2.8430 INCHES IN; Face Nominal Width: 0.118 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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