3020-01-284-4927

Spur Antibacklash Gear email this page

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Reference images of this national stock number
Reference of NSN 3020-01-284-4927 Reference of NSN 3020-01-284-4927

Model or part number: 2907613

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pdf NSN 3020-01-284-4927 Datasheet

MRC:
The means used to attach the item.ABSX
Attachment Method:
Mounting hole
MRC:
A measurement indicating the diameter-pitch per specific measurement scale of the item.AGJS
Pitch Diameter:
1.9583 inches
MRC:
The number of teeth included on the item.AJLA
Teeth Quantity:
47
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the bore.ANTP
Bore Style:
Plain both ends
MRC:
A designation indicating the backlash quality of an item.BDZQ
Backlash Designation:
Grade a
MRC:
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for the specific diameter of a threaded mounting hole.CMLK
Mounting Hole Thread Series Designator:
Unc transversely through hub, first end
MRC:
A designation that is used for the purpose of general identification of the mounting hole thread.CQLT
Mounting Hole Thread Size:
0.138 inches transversely through hub, first end
MRC:
Indicates the type and number of mounting holes provided on the item.CTQY
Mounting Hole Type And Quantity:
1 threaded transversely through hub, first end
MRC:
The nominal length of a straight line which passes through the center of an item,and terminates at the outside circumference.CWCD
Outside Diameter:
2.041 inches
MRC:
The measurement of the pressure angle on the item.CWPP
Pressure Angle:
20.0000 degrees
MRC:
The nominal distance between the body face and the protruding hub end.CWQL
Distance Between Body Face And Protruding Hub End:
0.230 inches first end
MRC:
A measurement taken at right angles to the length of the face,in distinction from thickness.CWRM
Face Width:
0.210 inches
MRC:
The nominal length of a straight line which passes through the center of a bore,and terminates at the circumference.CWRS
Bore Diameter:
0.499 inches both ends
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the hub.CWTR
Hub Style Designator:
Plain second end
MRC:
The nominal length of a straight line which passes through the center of a hub,and terminates at the circumference.CWTX
Hub Diameter:
1.680 inches second end
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Qq-s-764 federal specification single material response
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.STYL
Style Designator:
Protruding hub
MRC:
--
NIIN:
012844927
MRC:
--
NATO Stock Number:
3020-01-284-4927
MRC:
--
Shelf Life:
N/A
MRC:
--
UOM:
--
MRC:
--
DEMIL:
No
FIIG:
--
FIIG:
A27300
MRC:
--
INC:
26668
MRC:
--
IMM:
AX
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Shipping

Delivery of IN-STOCK orders ship same-day when order is placed before 2:00 PM EST.

Delivery dates for NON-STOCK items are estimates based on current backlog and are subject to confirmation at the time of order.

Formal Definition

Government issue definition of NSN 3020-01-284-4927

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.

Import / Export

Schedule B Classification
Schedule B Number
NAIC National Association of Insurance Commissioners
End Use A classification system for U.S. exported and imported merchandise based on principal use rather than the physical characteristics of the merchandise. End-Use codes are assigned by the Bureau of Economic Analysis under the U.S. Department of Commerce.
SITC Commodity classification system defined by the United Nations.
USDA
HITECH
Schedule B:
8483409000
NAICS:
333612
End Use Class:
21180
SITC:
74840
USDA:
1
HITECH:
0

Schedule B Codes Definitions:

Schedule B 8483409000

Gears and Gearing, Other Than Toothed Wheels, Chain Sprockets and Other Transmission Elements Entered Separately

End Use Code 21180

Industrial Machines, Other

Standard Intl. Trade Class (SITC) 74840

Gears and Gearing; Ball Screws; Gear Boxes and Other Speed Changers (including Torque Converters)

Manufacturers

This NSN is registered to the following cage codes.
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