| To: | w9ac@arrl.net, "amps@contesting.com" <amps@contesting.com> |
|---|---|
| Subject: | [Amps] Countersinks - was Alpha 76A |
| From: | Rick <nm3g@triad.rr.com> |
| Date: | Tue, 25 Nov 2014 18:37:47 -0500 |
| List-post: | <amps@contesting.com">mailto:amps@contesting.com> |
Good evening Paul, 82° is the ANSI screw standard (commercial).100° is the MIL/Aviation standard, to accommodate rivets and fasteners in thin sheet metal (more of a bearing surface to keep the head from pulling through). 90° is metric. I'd go with the 82°. Hope this helps. 73, Rick NM3G _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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