Searching for the specific string often indicates that an engineer, machinist, or quality technician is looking for a very particular section of this vast standard. But what does this code mean? Does "38" refer to a page number, a tooth count, a pressure angle, or a fit class?
While page numbers vary slightly between digital versions, technical tables for spline data include the following parameters: Description Total count of spline teeth. Pitch The ratio of teeth to pitch diameter (e.g., 8/16, 16/32). Pressure Angle Angle of the tooth profile (standard 30∘30 raised to the composed with power 37.5∘37.5 raised to the composed with power 45∘45 raised to the composed with power Pitch Diameter The diameter of the pitch circle. Base Diameter Dbcap D sub b The diameter from which the involute profile is generated. Major/Minor Diameters Critical for fit and clearance calculations. Application in Modern Systems ansi b 92.1 pdf 38
Specifies the pitch, number of teeth, and base diameter calculations. Outlines major, minor, and pitch diameter tolerances. Inspection Searching for the specific string often indicates that
“ANSI B92.1 external spline 38 teeth fillet root” While page numbers vary slightly between digital versions,