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NSN 3020-00-256-6530, 3020002566530
SPROCKET WHEEL

Federal Supply Classification
FSC 3020 - Gears, Pulleys, Sprockets, and Transmission Chain
National Item Identification Number
NIIN 002566530
Codification Country
United States
Item Name Code
INC 04456
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 3020-00-256-6530

National Stock Number (NSN) 3020-00-256-6530, or NIIN 002566530, (sprocket wheel) was assigned March 17, 1971 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 a year. There have been 2 contracts issued for this part number, with 2 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE7L324V6254, SPE7L423P1481, SPE7L423P1481. The total value of the awarded contracts has been US$ 7,475.00.

This NSN is somewhat common among different platforms, belonging to 4 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 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) 04456. [A TOOTHED WHEEL WHOSE TEETH OR SPROCKETS ARE DESIGNED TO BE ENGAGED WITH THE LINKS OF A PITCH CHAIN, TRACK, OR THE LIKE. IT IS USUALLY USED FOR TRANSMITTING POWER.]. 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 3020002566530 contains an unknown precious metal.

This NSN is associated to Schedule B 8483901000: chain sprockets and parts thereof. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.

This information was last updated on .


Technical Characteristics

GUIDE
(AQWM) NOT INCLUDED
ROLLER CHAIN PITCH TYPE FOR WHICH DESIGNED
(BYFJ) SINGLE PITCH
UNABLE TO DECODE
(BYZD) UNABLE TO DECODE
FIRST STEP FACE LARGEST DIAMETER AND LOCATION
(BYZL) 1.406 INCHES NOMINAL AA END
SECOND STEP LENGTH AND LOCATION
(BYZP) 0.250 INCHES NOMINAL AA END
MATERIAL
(MATL) STEEL
UNABLE TO DECODE
(MATL) UNABLE TO DECODE
UNABLE TO DECODE
(BYZN) UNABLE TO DECODE
UNABLE TO DECODE
(BYFB) UNABLE TO DECODE
UNABLE TO DECODE
(BYFH) UNABLE TO DECODE
UNABLE TO DECODE
(BYZF) UNABLE TO DECODE
UNABLE TO DECODE
(CLYS) UNABLE TO DECODE
UNABLE TO DECODE
(AQWM) UNABLE TO DECODE
LIGHTENING HOLE
(BXSJ) NOT INCLUDED
BELT/CHAIN/FILM SIZE FOR WHICH DESIGNED
(BYFH) ROLLER CHAIN
UNABLE TO DECODE
(BYFS) UNABLE TO DECODE
DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION
(BYZF) 0.938 INCHES NOMINAL BOTH ENDS
UNABLE TO DECODE
(BYZL) UNABLE TO DECODE
HUB END OUTSIDE DIAMETER AND LOCATION
(CLYR) 1.182 INCHES NOMINAL AA END
HUB EXTERNAL KEYWAY
(BYFW) NOT INCLUDED
FIRST STEP LENGTH AND LOCATION
(BYZN) 0.688 INCHES NOMINAL AA END
GROOVE/STEP LOCATION
(BYFB) BOTH ENDS
UNABLE TO DECODE
(AXND) UNABLE TO DECODE
UNABLE TO DECODE
(BXSJ) UNABLE TO DECODE
UNABLE TO DECODE
(BYFW) UNABLE TO DECODE
HUB END OUTSIDE DIAMETER AND LOCATION
(BYZD) 1.182 INCHES NOMINAL BOTH ENDS
DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION
(CLYS) 0.938 INCHES NOMINAL AA END
UNABLE TO DECODE
(BYFJ) UNABLE TO DECODE
UNABLE TO DECODE
(BYZP) UNABLE TO DECODE
COUNTERBORE FEATURE
(AXND) INCLUDED
ASA STANDARD CHAIN NUMBER
(BYFP) 50-1
BORE TYPE
(ASBP) INVOLUTE SPLINE
COUNTERBORE DIAMETER
(AAWY) 0.750 INCHES NOMINAL
COUNTERBORE LOCATION
(BDYS) BOTH ENDS
COUNTERBORE DEPTH
(AAWZ) 1.437 INCHES NOMINAL AND 0.344 INCHES NOMINAL
DESIGN FORM
(ARJD) PLAIN
DISTANCE FROM HUB END TO FLANGE END
(ASYR) 0.938 INCHES NOMINAL BOTH ENDS
FURNISHED ITEMS
(ABFF) COUNTERBORE
FACE WIDTH
(AQPL) 0.468 INCHES NOMINAL
FIRST STEP DIAMETER
(ABPR) 1.406 INCHES NOMINAL AA END
FIRST STEP LENGTH
(ABPS) 0.688 INCHES NOMINAL AA END
HARDNESS RATING TEST METHOD
(BYFQ) BRINELL
HUB OUTSIDE DIAMETER
(ALNC) 1.182 INCHES NOMINAL AA END
HUB OUTSIDE DIAMETER
(ALNC) 1.182 INCHES NOMINAL BOTH ENDS
OUTSIDE DIAMETER
(ABHE) 4.321 INCHES NOMINAL
OVERALL LENGTH
(ABHP) 2.343 INCHES NOMINAL
MATERIAL
(MATT) STEEL
METALLIC HARDNESS RATING AND LOCATION
(ASXJ) 200.0 BRINELL STANDARD MINIMUM BODY AND 240.0 BRINELL STANDARD MAXIMUM BODY
PITCH DIAMETER
(AGJS) 3.995 INCHES NOMINAL
PROTRUDING HUB CHARACTERISTIC
(BYDZ) STEPPED
SECOND STEP LENGTH
(ABPU) 0.250 INCHES NOMINAL AA END
SPLINE LENGTH
(AXFH) 0.594 INCHES NOMINAL
SPLINE MAJOR DIAMETER
(AAUJ) 0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
SPLINE MINOR DIAMETER
(AAUH) 0.417 INCHES NOMINAL
SPLINE PITCH DIAMETER
(BDTX) 0.458 INCHES NOMINAL
SPLINE PRESSURE ANGLE IN DEG
(AXFG) 30.0
SPLINE QUANTITY
(ABSA) 11
STYLE DESIGNATOR
(STYL) PLAIN
TEETH ROW QUANTITY
(BYFL) 1
TEETH HARDNESS RATING
(BYFR) 50.5 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
TEETH QUANTITY PER ROW
(BYFN) 20
TOOTH PITCH
(BYGF) 0.625 INCHES NOMINAL
SPLINE MINOR DIAMETER
(ABSC) 0.417 INCHES NOMINAL
UNABLE TO DECODE
(ABSC) UNABLE TO DECODE
BORE BEARING
(BYFS) NOT INCLUDED
UNABLE TO DECODE
(CLYR) UNABLE TO DECODE
III STYLE DESIGNATOR
(STYL) PLAIN

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