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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