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NSN 3020-00-157-0840, 3020001570840
GEAR,SPUR

Federal Supply Classification
FSC 3020 - Gears, Pulleys, Sprockets, and Transmission Chain
National Item Identification Number
NIIN 001570840
Codification Country
United States
Item Name Code
INC 05466
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 3020-00-157-0840

National Stock Number (NSN) 3020-00-157-0840, or NIIN 001570840, (gear,spur) was assigned January 26, 1973 in the Federal Logistics Information System (FLIS). NIIN 001570840 was cancelled on December 18, 2018, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 05466. [A GEAR, CYLINDRICAL IN FORM, WITH STRAIGHT TEETH ON THE OUTER SURFACE PARALLEL TO THE AXIS OF THE GEAR. SEE ALSO GEAR, ANTIBACKLASH, SPUR. FOR BULK MATERIAL, SEE ROD, PINION.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3020001570840 contains an unknown precious metal.

This information was last updated on .

Technical Characteristics

III HARDNESS RATING
(CQFM) 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL OUTSIDE DIAMETER
(CWCD) 6.664 INCHES
HUB STYLE DESIGNATOR
(CWTR) 1 GROOVE FIRST END
FIRST GROOVE NOMINAL WIDTH
(CWXY) 0.508 INCHES FIRST END
MATERIAL
(MATT) STEEL COMP 4340 OVERALL
SURFACE TREATMENT
(SFTT) OXIDE OVERALL
NOMINAL OVERALL LENGTH
(CWFR) 1.380 INCHES
BODY STYLE
(AAQL) WEBBED, OFFSET, WITH LIGHTENING HOLES
HARDNESS RATING
(CQFM) 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
PRESSURE ANGLE
(CWPP) 20.0000 DEGREES
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) 66,AISI/SAE 4340 FED STD SINGLE MATERIAL RESPONSE OVERALL
SPLINE QUANTITY
(ABSA) 6 BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END
(CWQL) 0.520 INCHES FIRST END
BORE STYLE
(ANTP) STRAIGHT SPLINE BOTH ENDS
NOMINAL DISTANCE FROM END TO FIRST GROOVE
(CWYL) 0.180 INCHES FIRST END
STYLE DESIGNATOR
(STYL) ONE PROTRUDING HUB, ONE FLUSH HUB
TOOTH FORM
(CWNH) STANDARD
FIRST GROOVE NOMINAL DIAMETER
(CWYD) 1.755 INCHES FIRST END
FACE NOMINAL WIDTH
(CWRM) 0.860 INCHES
TEETH QUANTITY
(AJLA) 38
III MATERIAL
(MATT) STEEL COMP 4340 OVERALL
PITCH DIAMETER
(AGJS) 6.3333 INCHES NOMINAL
HUB STYLE DESIGNATOR
(CWTR) PLAIN SECOND END
HUB NOMINAL DIAMETER
(CWTX) 2.490 INCHES SECOND END
PRECISION CLASSIFICATION
(CWWK) QUALITY NUMBER 6 OR QUALITY NUMBER 7
END NOMINAL DIAMETER
(CWWN) 2.500 INCHES FIRST END

Manufacturer Part Numbers

1473194

3020001570840

001570840

001570840


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