Specification AgeRangeDescription : Kid Brand : Boston Gear BulletPoint1 : Transmits torque between parallel shafts to provide rotational power to another part of a motorized system BulletPoint2 : Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles BulletPoint3 : Diametral pitch of 20 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision BulletPoint4 : Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion EducationalObjective : Color Recognition ExternallyAssignedProductIdentifier : 4571375386878 ExternallyAssignedProductIdentifier1 : 781711460016 ExternallyAssignedProductIdentifier2 : 0781711460016 ExternallyAssignedProductIdentifier3 : 885438729637 ExternallyAssignedProductIdentifier4 : 0787793653483 ExternallyAssignedProductIdentifier5 : 4944258518824 ExternallyAssignedProductIdentifier6 : 0782675999949 ExternallyAssignedProductIdentifier7 : 0885438729637 ExternallyAssignedProductIdentifier8 : 04944258518824 ItemDisplayDimensions_Height : 0.5 inches ItemDisplayDimensions_Length : 4.5 inches ItemDisplayDimensions_Width : 4 inches ItemName : Boston Gear NA12B-5/16 Spur Gear, 14.5 Pressure Angle, Steel, Inch, 20 Pitch, 0.313" Bore, 0.700" OD, 0.375" Face Width, 12 Teeth ItemPackageDimensions_Height : 4.826 centimeters ItemPackageDimensions_Length : 6.35 centimeters ItemPackageDimensions_Width : 5.334 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spur-gears Language : english Manufacturer : Boston Gear ManufacturerMinimumAge : 144 Material : Alloy Steel ModelNumber : NA12B5/16 NumberOfItems : 1 NumberOfPlayers : 1 NumberOfTeeth : 12 OperationMode : Manual PartNumber : NA12B-5/16 ProductDescription : This is a replacement HPI 50 Tooth Center Spur Gear, and is intended for use with the HPI RTR Trophy Truggy 4.6, and RTR Trophy Truggy Flux. ProductSiteLaunchDate : 2015-02-15T10:10:02.277Z Style : Classic SupplierDeclaredDgHzRegulation : not_applicable TargetAudienceKeyword : boys TargetGender : unisex Theme : Sports UnitCount : 1