On Thursday, February 8, 2018 at 10:19:25 AM UTC-8, Richard Pfiffner wrote:
On Wednesday, February 7, 2018 at 5:44:51 PM UTC-8, wrote:
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.
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I went through this a couple months ago. As noted above, metric countersunk screws have a 90 deg countersink, and of course there are different kinds of heads like flat or oval. I wasn't able to find a single supplier that had everything I needed, so ended up ordering some from Mr Metric (aka Mountz) and others from Bel-Metric. Needless to say I bought a few extra of each size!

Good luck,
Brian


Brian
Mil Spec screw on McMaster Carr are metric and have the 100 deg countersink.

Richard
www.craggyaero.com

woops the 100 deg was on the English cap screws.