Screw Pitch

Posted on | June 10, 2009 | 2 Comments

Screw Pitch

How to make a screw nut replacement if cannot find a fit-sized screw nut.?

I actually have a screw in size 5mm diameter, but screw pitch size is smaller than standard 0.8mm

http://en.wikipedia.org/wiki/ISO_261#Preferred_sizes

I can't find a nut replacement for this screw bolt to tight my component on box.

Anyone have any suggestions?

Thanks a lot.

You can do any of the following steps, in order of practicality:
1) establish the exact diameter and pitch (probably a non-metric one) and search a catalog of a well-stocked fastener vendor or
2) replace both bolt and nut for the closest common dia-pitch combination or
3) after finding out the dia and pitch, have a workshop machine one - this is pure theory and might turn out quite expensive or
4) make one yourself, but you need the right hand tool and some ability with it or
5) produce one by moulding a batch of two-component epoxy resin on the bolt. Apply some light oil on the threads to prevent seizing. After curing, unscrew and file away excess material. It will do for moderate torque.

DJ SCREW ANIMATION • PITCH CONTROL TV/DVD Series

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