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NSN 3020-00-891-1852, 3020008911852
GEAR,ANTIBACKLASH,SPUR

Federal Supply Classification
FSC 3020 - Gears, Pulleys, Sprockets, and Transmission Chain
National Item Identification Number
NIIN 008911852
Codification Country
United States
Item Name Code
INC 26668
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 3020-00-891-1852

National Stock Number (NSN) 3020-00-891-1852, or NIIN 008911852, (gear,antibacklash,spur) was assigned January 13, 1967 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 26668. [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.]. 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 3020008911852 contains an unknown precious metal.

This NSN is associated to Schedule B 8483409000: gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333612: speed changer, industrial high-speed drive, and gear manufacturing.

This information was last updated on .


Technical Characteristics

END NOMINAL DIAMETER
(CWWN) 0.187 INCHES FIRST END
END NOMINAL LENGTH
(CWWH) 0.259 INCHES FIRST END
FACE NOMINAL WIDTH
(CWRM) 0.088 INCHES
FIRST STEP NOMINAL DIAMETER
(CWXB) 0.218 INCHES FIRST END
FIRST STEP NOMINAL LENGTH
(CWWS) 0.075 INCHES FIRST END
HUB NOMINAL DIAMETER
(CWTX) 0.187 INCHES SECOND END
HUB STYLE DESIGNATOR
(CWTR) 2 STEPS FIRST END
HUB STYLE DESIGNATOR
(CWTR) PLAIN SECOND END
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL COMP 303 OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END
(CWQL) 0.148 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END
(CWQL) 0.496 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER
(CWCD) 1.417 INCHES
SECOND STEP NOMINAL DIAMETER
(CWXL) 0.225 INCHES FIRST END
SECOND STEP NOMINAL LENGTH
(CWXG) 0.050 INCHES FIRST END
PITCH DIAMETER
(AGJS) 1.3750 INCHES NOMINAL
PRESSURE ANGLE
(CWPP) 20.0000 DEGREES
TOOTH FORM
(CWNH) STANDARD
STYLE DESIGNATOR
(STYL) PROTRUDING HUBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) PASSIVATE OVERALL
TEETH QUANTITY
(AJLA) 66
III MATERIAL
(MATT) STEEL COMP 303 OVERALL

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