Thread Chart

[retailer]

Every now and again you come against a thread that you can't identify - this recently happened to me when fitting a new light to my mill - I picked up some cheap track spot lights from a car boot sale and wanted to attach one to a goose neck, I measured the thread diam and pitch but found it did not match any of the common threads I had info on - I did however find it in this chart, turned out to be a brass thread. The chart is in Word file with doc extension and printable.

 

[RonW]

Thanks retailer. It would appear from this chart that the Myford spindle thread may be based on an admiralty thread. The chart is a great source of information except that it doesn't tell you what the angle is. The dimensions given in the chart are slightly different from what i measure but not significantly from what hopper calculated. Thanks to all.