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NSN 3020-01-238-8339, 3020012388339
GEAR,SPUR

Federal Supply Classification
FSC 3020 - Gears, Pulleys, Sprockets, and Transmission Chain
National Item Identification Number
NIIN 012388339
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 3020-01-238-8339

National Stock Number (NSN) 3020-01-238-8339, or NIIN 012388339, (gear,spur) was assigned August 21, 1986 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 3 suppliers. Today, 3 suppliers are listed as Active suppliers 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 been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 2 contracts issued for this part number, with 2 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7L424P2166, SPE7L418P1980, SPE7L418P1980. The total value of the awarded contracts has been US$ 5,019.85.

This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 20, 2008, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.

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 3020012388339 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 OVERALL
BODY STYLE
(AAQL) PLAIN, SOLID
BORE NOMINAL DIAMETER
(CWRS) 0.644 INCHES BOTH ENDS
BORE STYLE
(ANTP) INVOLUTE SPLINE BOTH ENDS
FACE NOMINAL WIDTH
(CWRM) 0.250 INCHES
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) MIL-S-5636 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL COMP 4140 OVERALL
NOMINAL OUTSIDE DIAMETER
(CWCD) 2.444 INCHES
PITCH DIAMETER
(AGJS) 2.2222 INCHES NOMINAL
PRESSURE ANGLE
(CWPP) 20.0000 DEGREES
SPECIAL FEATURES
(FEAT) HEAT TREAT TO RC 31-36 PER MIL-H-6875(140-160 KSI TENSILE STRENGTH); SPUR GEAR DATA: DIAMETRAL PITCH=9,ADDENDUM=0.1111,ROOT DIA.=1.944,MAX. TOOTH THK.=0.17253,MEAS. OVER PINS=2.4832,PINDIA.=0.192,TESTING PRESSURE(OZ.)=33-39,CENTER DISTANCE RADIUS=1.1043,MAX. TOOTH-TOOTH COMPOSITE ERROR=0.00161,MAX.TOTAL COMPOSITE ERROR=0.00425,NO. OF TEETH(MATING GEAR)=40,NOM. CENTER DISTANCE=3.333; SPLINE DATA: BASE DIA.=0.50518,CLASS OF FIT=5,SPLINE PITCH=24/48,PIN DIA.=0.072,DIA. BETWEEN PINS=0.4826,FORM DIA. MIN.=0.629,TOOTH FORM=FLATROOT SIDE FIT INVOLUTE PER ANSI B92.1-1970
SPLINE PITCH DIAMETER
(BDTX) 0.58333 INCHES NOMINAL BOTH ENDS
SPLINE QUANTITY
(ABSA) 14 BOTH ENDS
STYLE DESIGNATOR
(STYL) HUBLESS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) OXIDE OVERALL
TEETH QUANTITY
(AJLA) 20
TOOTH FORM
(CWNH) STANDARD

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