Kerry,

Bellville washer- McMaster-Carr states - "Also called spring washers, carry
large loads in small spaces. They maintain tension when force is applied to
their surfaces and can be used to prevent bolt loosening or with bearings to
reduce vibration. "

Gary Camac


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kerry McMullen
Sent: Monday, June 26, 2006 12:38 PM
To: [log in to unmask]
Subject: Re: [TN] Plating Recomendation?

What is a Bellville washer?
TIA

Kerry McMullen
Principal New Product Mfg. Engineer
LTX Corporation
50 Rosemont Road
Westwood, MA 02090-2306
(T) 781-467-5468



John Burke <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
06/26/2006 01:36 PM
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Re: [TN] Plating Recomendation?






No comment about the finish, but you might recommend he use Bellville
washers on the bolt asseblies.

John

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of John Parsons
Sent: Monday, June 26, 2006 10:21 AM
To: [log in to unmask]
Subject: [TN] Plating Recomendation?

Happy Monday!



I have a customer (we are a fabricator) asking the following question;



"..we are looking at making a board that is intended to be bolted to some
batteries through 6mm and 8mm nuts and bolts. I was wondering if you have
any recommendations on what sort of plating should be on the pads these nuts
are going to screw down onto? The batteries are fairly heavy and the
apparatus may be subject to some vibration and shock. Thanks for your
insight."



I am thinking HASL has been used for years in similar applications but does
anyone have any experience or are there any studies on the matter?



Regards



John Parsons




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