X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sj-iport-6.cisco.com ([171.71.176.117] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTPS id 2822158 for flyrotary@lancaironline.net; Fri, 28 Mar 2008 09:56:49 -0400 Received-SPF: softfail receiver=logan.com; client-ip=171.71.176.117; envelope-from=echristley@nc.rr.com Received: from sj-dkim-3.cisco.com ([171.71.179.195]) by sj-iport-6.cisco.com with ESMTP; 28 Mar 2008 06:56:04 -0700 Received: from sj-core-2.cisco.com (sj-core-2.cisco.com [171.71.177.254]) by sj-dkim-3.cisco.com (8.12.11/8.12.11) with ESMTP id m2SDu4rE015401 for ; Fri, 28 Mar 2008 06:56:04 -0700 Received: from xbh-rtp-211.amer.cisco.com (xbh-rtp-211.cisco.com [64.102.31.102]) by sj-core-2.cisco.com (8.13.8/8.13.8) with ESMTP id m2SDu3DP011298 for ; Fri, 28 Mar 2008 13:56:04 GMT Received: from xfe-rtp-202.amer.cisco.com ([64.102.31.21]) by xbh-rtp-211.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.1830); Fri, 28 Mar 2008 09:55:53 -0400 Received: from [64.102.38.143] ([64.102.38.143]) by xfe-rtp-202.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.1830); Fri, 28 Mar 2008 09:55:53 -0400 Message-ID: <47ECF8FC.6050503@nc.rr.com> Date: Fri, 28 Mar 2008 09:56:12 -0400 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Thunderbird 2.0.0.12 (X11/20080227) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Metric Bolts References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 28 Mar 2008 13:55:53.0685 (UTC) FILETIME=[70540050:01C890DB] Authentication-Results: sj-dkim-3; header.From=echristley@nc.rr.com; dkim=neutral Dale Rogers wrote: > Add this to y'all's store of the world's most useless trivia. Some > mfgrs. are adding a bit of yellow dye during the zinc plating > operations to give the parts a "cadmium" appearance without the > HazMat worries. > > Dale R. > > Lehanover@aol.com wrote: >> Now only available if manufactured before a date long ago, like >> surplus. Cad plating is out. Zink and silver plating is in. They were >> phasing out cad when I was still there. >> >> Lynn E. Hanover I wouldn't call that useless trivia, Dale. I would say that is why the yellow on the AN bolts I have seem to scrape off with a fingernail. Lynn, as all evidence I've seen backs up your statement that zinc is the new cadmium, how do we avoid galvanic corrosion? Are all the stock nuts and bolts anodized in some way?