Spur Antibacklash Gear

P16-1-120
(NSN) National Stock Number
3020-00-469-3102
Federal Supply Classification
3020 Gears, Pulleys, Sprockets and Transmission Chain
Item Name Code
26668
Schedule B Code
8483409000
Summary

Mounting hole attachment method, 2.4990 inches minimum and 2.5000 inches maximum pitch diameter, 120 teeth quantity, 1 threaded transversely through hub, first end mounting hole type and quantity, 0.325 inches nominal overall length, stub tooth form

DAC HCC DMIL RNCC
5 - - 5
RNVC SADC MSDS RNAAC
2 - - KE
Identification

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

INC FIIG Concept Condition
26668 A27300 - 1
Specifications
Attachment Method
mounting hole
Details The means used to attach the item.
Pitch Diameter
2.4990 inches minimum and 2.5000 inches maximum
Details A measurement indicating the diameter-pitch per specific measurement scale of the item.
Teeth Quantity
120
Details The number of teeth included on the item.
Mounting Hole Type And Quantity
1 threaded transversely through hub, first end
Details Indicates the type and number of mounting holes provided on the item.
Nominal Overall Length
0.325 inches
Details The nominal dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
Tooth Form
stub
Details An indication as to whether the teeth are a standard depth or modified to a shorter depth.
Pressure Angle
20.0000 degrees
Details The measurement of the pressure angle on the item.
Nominal Distance Between Body Face And Protruding Hub End
0.221 inches first end
Details The nominal distance between the body face and the protruding hub end.
Face Nominal Width
0.104 inches
Details A measurement taken at right angles to the length of the face,in distinction from thickness.
Bore Nominal Diameter
0.187 inches both ends
Details The nominal length of a straight line which passes through the center of a bore,and terminates at the circumference.
Hub Nominal Diameter
0.375 inches first end
Details The nominal length of a straight line which passes through the center of a hub,and terminates at the circumference.
Material
steel comp 303 overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
qq-s-764,type 303,cond a fed spec single material response overall
Details The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.
Surface Treatment
passivate overall
Details The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Style Designator
protruding hub
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
411377-4 80020 1 - 7 2 - KE
Z4D120 00328 3 - 3 2 - KE
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N A - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
64910 - W -
RVC WCC TCC SHC
- 593 Z 9
Price and Availability Quote

Send us a quick request for quote using the form below:

Provided with every order

Order with confidence, we are a valued certified supplier serving customers in the military and aerospace industries.

  • Counterfeit Parts Prevention
  • 100% Product Inspections
  • 7 Year Record Retention
  • On Time Delivery
  • HAZMAT Certified
  • Worldwide Shipping
FAQs
Frequently asked questions for NSN 3020-00-469-3102
What is the NIIN of the NSN 3020-00-469-3102?
The National Item Identification Number (NIIN) of the NSN 3020-00-469-3102 is 00-469-3102
When the NSN 3020-00-469-3102 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Fri, Jun 4, 1971
Does the NSN 3020-00-469-3102 contain any precious metals?
Does not contain precious metal
Does the NSN 3020-00-469-3102 contain any hazardous material?
No data in HMIRS

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.

Similar Products
Who we are?

At our core, we specialize in sourcing and supplying high-quality NSN (National Stock Number) parts to industries that demand precision and reliability.

From aerospace and defense to manufacturing and logistics, we provide the essential components that keep critical systems running.

Contact
350 Tenth Ave
San Diego, CA, 92101
United States
© 2025 National Stock Number (NSN) Parts Store, Inc. All rights reserved.
Made in USA