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NSN 3020-01-117-0334, 3020011170334
GEAR,ANTIBACKLASH,HELICAL

Federal Supply Classification
FSC 3020 - Gears, Pulleys, Sprockets, and Transmission Chain
National Item Identification Number
NIIN 011170334
Codification Country
United States
Item Name Code
INC 26667
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 3020-01-117-0334

National Stock Number (NSN) 3020-01-117-0334, or NIIN 011170334, (gear,antibacklash,helical) was assigned August 7, 1981 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.

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) 26667. [AN ITEM HAVING ONE FIXED GEAR AND ONE FREE GEAR, BOTH HAVING THE SAME COMPLEMENT OF HELICAL 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 3020011170334 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 .


Technical Characteristics

III MATERIAL
(MATT) STEEL COMP 4140 OR STEEL COMP 4140H OVERALL
MATERIAL
(MATT) STEEL COMP 4140 OVERALL OR STEEL COMP 4140H OVERALL
BORE STYLE
(ANTP) 10A W/ KEYWAY BOTH ENDS
BORE STYLE
(ANTP) W/ KEYWAY BOTH ENDS
BORE NOMINAL DIAMETER
(CWRS) 0.957 INCHES BOTH ENDS
FACE NOMINAL WIDTH
(CWRM) 0.380 INCHES
HARDNESS RATING
(CQFM) 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HELIX ANGLE
(CWPZ) 15.0000 DEGREES
HUB NOMINAL DIAMETER
(CWTX) 1.499 INCHES FIRST END
HUB STYLE DESIGNATOR
(CWTR) PINNED FIRST END
KEYWAY NOMINAL WIDTH
(CWSN) 0.156 INCHES BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) 66 FED STD 1ST MATERIAL RESPONSE OR MIL-S-890 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL COMP 4140 OR STEEL COMP 4140H OVERALL
NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM
(CWSR) 0.518 INCHES BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END
(CWQL) 0.336 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER
(CWCD) 6.300 INCHES
PITCH DIAMETER
(AGJS) 6.2000 INCHES NOMINAL
PRECISION CLASSIFICATION
(CWWK) QUALITY NUMBER 12 OR QUALITY NUMBER 13
PRESSURE ANGLE
(CWPP) 20.0000 DEGREES
STYLE DESIGNATOR
(STYL) PROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) MIL-C-13924,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) OXIDE OVERALL
TEETH QUANTITY
(AJLA) 124
TEETH TYPE
(CWMW) SINGLE HELIX
TOOTH DIRECTION
(CWNM) LEFT
TOOTH FORM
(CWNH) STANDARD

Manufacturer Part Numbers


Related Inventory

3274302
3020011170334
Condition NS
GEAR
Readily Available


 
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