Richard,
What you are describing as a cap screw is what I and my fastener supplier
know as a setscrew.
We do, and have always mixed all types, with no problems. I suppose it
depends on how close to the wind you sail.
We use all stainless fasteners and have only 2 torque specifications, 'FT' &
'FT' ( the second one is 'fairly tight').
Dave, sorry for taking your thread further off topic.
Derek
"Richard Hinterhoeller" wrote in message
news:5146236@discussion.autodesk.com...
My understanding is that it depends on how you are going to tighten it.
A bolt has a nut. The nut is turned to secure the joint and the bolt
remains stationary.
A cap screw, on the other hand, is turned to secure the joint. One
application of this is when a tapped hole is used.
In some sizes, cap screws will have a greater head thickness because of
the larger load.
Companies I've worked for only stock cap screws so that there's no mix
up. A cap screw can be used as a bolt, but you might ruin the head of a
bolt when used as a cap screw.
Richard