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Home > Classifieds > Astromart Classifieds > Telescope Making > Classified #127723

Wanted: Collimation Bolts (3/8-24)

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I am looking for some collimation bolts for the mirror cell I am building. I need 3/8" diameter, 24 tpi (fine thread), hex head, fully threaded bolts about 2 1/2" to 3" long. I can't find any in my area. Apparently it is a specialty item because it is fully threaded. I found them on the internet (McMaster Carr), but I have to buy a box of ten, which costs more than I want to pay. Does anybody have something like this left over from a past project? Obviously I need three of them. Thanks.

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