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Dimension a Screw
3

Dimension a Screw

Dimension a Screw

(OP)
I am trying to call out a screw spec. on a drawing. It is a M4 X 0.7 screw. Is there any other spec. to a screw other than the "M4 X 0.7" callout. What happened was the supplier sent us the screws as per the M4 X 0.7. But it failed our testing gages because they were a different "D" spec. I checked on various drafting standards. I could not find anymore information about a "D" spec. for screws. I would appreciate if anybody can give me soem information about this. Thank you.

RE: Dimension a Screw

You might also want to consider using a NAS, MS, or AN spec to control your mechanical hardware.  Although, the per piece price will increase some industries mandate that type of control.

Best Regards,

Heckler
Sr. Mechanical Engineer
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"There is no trouble so great or grave that cannot be much diminished by a nice cup of tea"  Bernard-Paul Heroux
 

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