Asme y14.5 knurl dimension
In brief, the advantage of this method is the provision by which good tracking (the ability of teeth to mesh as the tool penetrates the work blank in successive revolutions) is obtained by tools designed on the basis of diametral pitch instead of tpi (teeth per inch) when used with recommended work blank diameters that are multiples of 1/64 or 1/32in., depending upon the pitch selected.
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These tools and recommendations are equally applicable to general purpose and precision knurling. Such knurling is made by displacement of the material on the surface when rotated under pressure against a knurling tool.
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This Standard covers knurling tools with standardized diametral pitches and includes dimensional relations with stock in the production of straight, diagonal, and diamond knurling on cylindrical surfaces having teeth of uniform pitch parallel to the axis of the cylinder or at a helix angle not exceeding 45 deg. The request shall be made in writing and should include the rationale for the particular request in order to facilitate review by the Committee. The Standards Committee shall consider all requests and recommendations for change to standards maintained under the stabilized maintenance option from any materially affected and interested party. Stabilized maintenance is an option for maintenance of a standard that requires status review every 10 years rather than revision or reaffirmation every 5 years. KENAT, probably the least qualified checker you'll ever meet.This standard is being maintained under Stabilized Maintenance. However for the OP, regardless of which standard, the designation was correct.ītrue, in your case I belive the problem was the QC guy more than the standards. The first paragraph implies you can have just the screw number while the second says you shouldn't, maybe it's just clarifying what the first paragraph said but I'm starting to lose track of my thoughts. The decimal equivalent, to three decimal places, should be shown in parentheses. Numbered sizes may be shown because of established practices. Where decimal equivalents are used for size callout, they shall be shown in four-place decimals (omitting zero in the fourth place) for fractional sizes and in three-place decimals for number sizes. RE: Repetitive Features KENAT (Mechanical) 19 Oct 07 12:03ģ.2.1.3 The nominal thread size is the basic major diameter and is specified as the fractional diameter, screw number or its decimal equivalent. KENAT, probably the least qualified checker you'll ever meet. Now if these standards aren’t referenced in any way then arguably you can do what the heck you like, which is why I’m a stickler for somehow referencing any invoked standards. by calling up 14.5 in the title block etc.), 14.6 or B1.1. The copy of 14.6 I have is 2001 although 14.5M-1994 references the 1978 edition.Įither way though, the thread designation you have would appear to be legal assuming the drawing somehow references, directly or indirectly (e.g. This is a slight mis-match to B1.1 which seems to say you can just have the number.
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I just turned the page and 14.6 section 3.2.1.3 actually suggests that just the number size shouldn’t be shown, but if used should be followed by the decimal in parenthesis (we do this).
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To avoid misunderstanding, it is recommended that the controlling organization and thread standard be specified or otherwise reference on the drawing.
Asme y14.5 knurl dimension series#
Reference is made instead to the designation symbols of the standard, such as series symbols and class symbols. the name and number of the controlling thread standard is frequently omitted from the drawing.