What does "T5" refer to? --- Ron K. Jeffries 805-567-4670
On Fri, Jul 10, 2015 at 12:01 PM, Werner Almesberger <[email protected] > wrote: > Designing that case is tedious work, but I'm beginning to feel that > I'm getting somewhere. But first, there's something important that > needs proper consideration: screws. > > When looking for small screws, it's surprisingly difficult to find > detailed specifications. While Alibaba and friends are full of > offers of little Torx screws for iPhones (NB: Apple nowadays uses > pentalobe screws), Blackberry, etc., there's hardly a shop that > actually provides a specific geometry. > > In general, it seems that Torx T5 is a good compromise between size > and availability. I.e., most of the screws used in mobile phones > seem to have a T5 drive. > > So, what's the typical T5 screw like ? The answer is that there is > none. Drive (slotted, Phillips, Torx, ...), head shape (cylindrical, > conical, round, and all sorts of fancy variations), thread, and > length, while all being related to each other, can appear in many > combinations. > > Eventually, I found a combination that appears in several places: > Torx T5 drive with a M1.6 thread. The smallest head for this type > of screw seems to have a diameter of 3.0 mm and a height of > 1.2 mm - small enough for Anelok. > > This leaves the length. I found a lot of useful information in the > flyer for EJOT DELTA PT screws: > > http://www.ejot.com/medias/sys_master/products/products/8797562339358/Info-Flyer-DELTA-PT.pdf > > So for M1.6, we can have a length from 3.5 mm to 16.0 mm. > > Next: the design so far. > > - Werner > > _______________________________________________ > Qi Hardware Discussion List > Mail to list (members only): [email protected] > Subscribe or Unsubscribe: > http://lists.en.qi-hardware.com/mailman/listinfo/discussion >
_______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
