Re: Beveled Washers for MC Channels

My apologies for the quick & incomplete post....I neglected to add that washers material meets ASTM specs & that hardened steel washers are also available

Specs on washers from McMaster

Malleable iron meets ASTM A47, Class 32510. Rockwell hardness is B62.

Hardened steel is made of C1035-C1055 steel. Rockwell hardness is C38. Washers conform to ASTM F436 and are for use with A325/A490 structural bolts.

If you need them in a hurry its hard to beat McMaster.


cheers
Bob

On 5/17/07, Scott, William N <William.N.Scott@conocophillips.com> wrote:

Beveled washers need to meet the ASTM F???? for hardened washers. An iron washer from McMaster-Carr is probably cast iron of unknown quality.

 

Check Chicago Bolt or Portland Bolt for ASTM conforming beveled washers.

 

Bill

---

From: Robert Kazanjy [mailto:rkazanjy@gmail.com]
Sent: Wednesday, May 16, 2007 5:59 PM
To: seaint@seaint.org
Subject: Re: Beveled Washers for MC Channels

David-

Check out www.mcmaster.com

page 3156

the washers are for standard I-beams  16% slope (1:6)

they're available in iron for about 40 to 50 cents (small to medium sized bolts) up to about $1 each in large sizes.

If these don't fit the bill  .........a machine / heavy sheet metal shop could shear, punch & shear then up out of channel flange for you....

punching & shearing would be the cheapest means of making them custom but they'd be pretty coarse, not pretty

cheers
Bob

On 5/16/07, Gary L. Hodgson and Assoc. <ghodgson@bellnet.ca> wrote:

David,
As far as I know, bevelled washers are available but expensive and hard
to find.  i always recommend to fabricators to cut up some flanges from
left over channels and use them to make washers=easy and relatively
cheap. Another alternative is, if you have a good burning machine, is to
cut flat bar in half on a taper to get your bevelled material and then
drill. Sometimes it takes a bit of additional grinding.  Shops do this
all the time to make wedges for fitting steel.
Gary

davidfinley@bizsea.rr.com wrote:
> A retrofit requires adding top & bottom plates to "box in" 2 existing MC channels.  I know the flange slope of MC channels is different than "standard" C channels.  Are beveled washers for MC channels readily available?  Are the same washers used for both types of channels?
>
> David Finley
>
> ******* ****** ******* ******** ******* ******* ******* ***
> *   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
> *
> *   This email was sent to you via Structural Engineers
> *   Association of Southern California (SEAOSC) server. To
> *   subscribe (no fee) or UnSubscribe, please go to:
> *
> *   http://www.seaint.org/sealist1.asp
> *
> *   Questions to seaint-ad@seaint.org. Remember, any email you
> *   send to the list is public domain and may be re-posted
> *   without your permission. Make sure you visit our web
> *   site at: http://www.seaint.org
> ******* ****** ****** ****** ******* ****** ****** ********
>
>

******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad@seaint.org. Remember, any email you
*   send to the list is public domain and may be re-posted
*   without your permission. Make sure you visit our web
*   site at: http://www.seaint.org
******* ****** ****** ****** ******* ****** ****** ********