On Saturday, February 3, 2018 at 3:51:27 PM UTC-5, Charles Longley wrote:
Does anyone have a source for metric aircraft countersunk machine screws? Similar to MS24693S28. They need to be aircraft hardware store screws have the wrong taper on them. This is for Blanik L-23 & L-33’s.

US-standard countersunk screws have a taper angle of 82degr. or 100 degr. vs. a metric screw having a 90degr. taper angle.
Is there a DIN or ISO standard specified by LET? If so, McMaster Carr carries them but I am not sure how an aircraft standard plays into that.
Uli
'AS'