Spur Antibacklash Gear

L310034626

L310034626
(NSN) National Stock Number
3020-00-027-3644
Federal Supply Classification
3020 Gears, Pulleys, Sprockets and Transmission Chain
Item Name Code
26668
Schedule B Code
8483409000
Summary

Clamp attachment method, 0.8958 inches nominal pitch diameter, 86 teeth quantity, 0.432 inches nominal overall length, standard tooth form, 20.0000 degrees pressure angle

DAC HCC DMIL RNCC
1 - - 5
RNVC SADC MSDS RNAAC
2 - - HD
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
clamp
Details The means used to attach the item.
Pitch Diameter
0.8958 inches nominal
Details A measurement indicating the diameter-pitch per specific measurement scale of the item.
Teeth Quantity
86
Details The number of teeth included on the item.
Nominal Overall Length
0.432 inches
Details The nominal dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
Tooth Form
standard
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.
Face Nominal Width
0.125 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
0.248 inches first end
Details The nominal length of a straight line which passes through the center of a hub,and terminates at the circumference.
Precision Classification
quality number 12
Details The quality designation of an item as determined by industry,association,or manufacturer standards.
Material
steel comp 416 body
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
aisi 416/sae 51416 fed std 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
2041710-86 10001 1 - 3 2 - HD
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 - P -
RVC WCC TCC SHC
- 593 Z 9
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Manufacturer
LOCKHEED MARTIN LIBRASCOPE CORP
CAGE: 36090
GLENDALE , CA , 91201-2433
UNITED STATES
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FAQs
Frequently asked questions for NSN 3020-00-027-3644
What is the NIIN of the NSN 3020-00-027-3644?
The National Item Identification Number (NIIN) of the NSN 3020-00-027-3644 is 00-027-3644
When the NSN 3020-00-027-3644 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Tue, May 9, 1967
Does the NSN 3020-00-027-3644 contain any precious metals?
Does not contain precious metal
Does the NSN 3020-00-027-3644 contain any hazardous material?
No data in HMIRS

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