Tapped Hole Distance
Tapped Hole Distance
(OP)
I was wondering if there is a rule of thumb for the distance a tapped hole should be from an open end of a part. I want to use a 3/8" tapped hole but I am concerned about the distance between the thread and end of the part. Due to constraints I can only have the hole positioned 1/4" from the end of the part. Will this be enough or should I try to position it further away?





RE: Tapped Hole Distance
(Nut flat width-bolt Ø)/2 x 1.5 + bolt Ø/2
Your example: (.5625-.375)/2 x 1.5 + .375/2= .328"
RE: Tapped Hole Distance
RE: Tapped Hole Distance
(Nut flat width-bolt Ø)/2 x 1.5 + bolt Ø/2
Your example: (.5625-.375)/2 x 1.5 + .375/2= .328"
Mandrake, is this generally for all steels, or would this apply to aluminum also?
Flores
RE: Tapped Hole Distance
The rule of thumb in my fine equation of course is the x1.5 factor. This, roughly, is the ratio of tensile strength of a typical hex nut to typical low carbon steel. You would have to adjust this value depending on your fastener material/grade or tapped material tensile strength.
RE: Tapped Hole Distance
Later,
Dennis