I think the proper description, or closest would be "square head plow bolt"
as shown in this photo:
http://file.seekpart.com/productsimage/2012/7/17/201271710421319835.jpg
As for a source, I'm not sure. I found a couple of discussions about them
being used on old Oliver plows. Maybe someone into farm equipment
restoration knows of a source?
http://olivergang.org/discus/messages/963/1153.html?1104199506
Doug Armstrong
-----Original Message-----
From: shop-talk-bounces@autox.team.net
[mailto:shop-talk-bounces@autox.team.net] On Behalf Of Steve Hammatt, Mount
Vernon WA USA
Sent: Monday, April 15, 2013 1:59 PM
To: Shop Talk
Subject: Re: [Shop-talk] Specialty bolts (now see photos)
OK, this will make it easier:
http://www.flickr.com/photos/97934425@N00/
go here to see some photos of what Ibm trying to describe.
Thanks.
Steve Hammatt
Mount Vernon WA USA
From: Steve Hammatt, Mount Vernon WA USA
Sent: Monday, April 15, 2013 10:33 AM
To: Shop Talk
Subject: Re: [Shop-talk] Specialty bolts
I should clarify: This is not a carriage bolt. When looking in
the plan (downward) view, the head appears square. In other
words, the slightly domed head surface meets the sides to
form a square shape that nests into the tapered square hole
in the casting. The tapered sides appear to be around
30 degrees from vertical.
Steve Hammatt
Mount Vernon WA USA
From: Steve Hammatt, Mount Vernon WA USA
Sent: Monday, April 15, 2013 10:11 AM
To: Shop Talk
Subject: [Shop-talk] Specialty bolts
Ibm looking (so far without success) for a type of bolt that:
1. slight convex head
2. underside of head has 4 facets (sides) that taper inward.
The bolt is designed to fit into a small casting with a matching
4-sided tapered hole to lock bolt from rotating while being
tightened.
Anyone ever seen anything like this?
Steve Hammatt
Mount Vernon WA USA
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