NSN 3020-00-287-8431, 3020002878431
GEAR,SPUR

Federal Supply Classification: FSC 3020 - Gears, Pulleys, Sprockets, and Transmission Chain
National Item Identification Number: NIIN 002878431
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 3020-00-287-8431

National Stock Number (NSN) 3020-00-287-8431, or NIIN 002878431, (gear,spur) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

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

This NSN is unique to one weapons system.

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) 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 3020002878431 does not contain precious metals.

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 Aug 01, 2025.

Technical Characteristics

MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) QQ-S-763,CLASS416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
BODY STYLE: (AAQL) PLAIN, SOLID
BORE NOMINAL DIAMETER: (CWRS) UNABLE TO DECODE
BORE STYLE: (ANTP) UNABLE TO DECODE
END NOMINAL DIAMETER: (CWWN) UNABLE TO DECODE
END NOMINAL LENGTH: (CWWH) UNABLE TO DECODE
FACE NOMINAL WIDTH: (CWRM) 0.187 INCHES
FIRST STEP NOMINAL DIAMETER: (CWXB) UNABLE TO DECODE
FIRST STEP NOMINAL LENGTH: (CWWS) UNABLE TO DECODE
HUB STYLE DESIGNATOR: (CWTR) UNABLE TO DECODE
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) UNABLE TO DECODE
PITCH DIAMETER: (AGJS) 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM
MATERIAL: (MATT) UNABLE TO DECODE
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: (CWQL) UNABLE TO DECODE
NOMINAL OUTSIDE DIAMETER: (CWCD) 0.541 INCHES
NOMINAL OVERALL LENGTH: (CWFR) 0.406 INCHES
PRESSURE ANGLE: (CWPP) 14.5000 DEGREES
STYLE DESIGNATOR: (STYL) PROTRUDING HUB
SURFACE TREATMENT: (SFTT) UNABLE TO DECODE
TEETH QUANTITY: (AJLA) 24
TOOTH FORM: (CWNH) STANDARD
BORE NOMINAL DIAMETER: (CWRS) 0.120 INCHES BOTH ENDS
BORE STYLE: (ANTP) PLAIN BOTH ENDS
FIRST STEP NOMINAL LENGTH: (CWWS) 0.031 INCHES FIRST END
MATERIAL: (MATT) STEEL COMP 416 OVERALL
HUB STYLE DESIGNATOR: (CWTR) 1 STEP FIRST END
END NOMINAL LENGTH: (CWWH) 0.188 INCHES FIRST END
END NOMINAL DIAMETER: (CWWN) 0.211 INCHES FIRST END
SURFACE TREATMENT: (SFTT) PASSIVATE OVERALL
FIRST STEP NOMINAL DIAMETER: (CWXB) 0.375 INCHES FIRST END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: (CWQL) 0.219 INCHES FIRST END
III MATERIAL: (MATT) STEEL COMP 416 OVERALL