Subject: Tap End Studs for
Our DSA's all have all thread studs and I would like
to replace them with stud bolts, threaded only on each end, not all
thread. Where can I obtain stud bolts threaded only on each end? Can you
give me the correct name for studs of this type? Do you have a catalog
for ordering the correct studs for specific connections?
WOODCO USA can supply the studs you need.
The studs you want have the proper name "Tap End
Studs." Studs of this type have threads cut to a specific length on one
end to control the extent of engagement in a tapped hole. Properly
dimensioned studs of this type tighten at the top of the hole where the
thread ends, the remainder of the stud extends outward the proper length
to engage a mating flange and accept a nut. The dimensions of tap end
studs normally furnished by WOODCO USA assume no
raised face for
studded surfaces, and assume the possibility of
RX gaskets for
studded surfaces. WOODCO USA tap end studs have one full diameter of
engagement with the tapped hole. Users may request studs of special
length for less common applications.
You can find a chart showing the stud sizes for all
popular flange connections at:
If you want a good portable reference for these
studs, and other flange dimension information, go to:
http://www.woodcousa.com/flg-sld.htm and request one of our Flange Slide
If you choose to go ahead with your idea to replace
the studs, WOODCO USA can also offer you specialized tools to extract
the studs presently in your equipment.
For more about
Tap End Studs for Adapter Flanges, See Q & A 51.
For a Catalog for Bolts,
Nuts, Ring Gaskets and Wrenches, Click Here.
To view catalog pages on
WOODCO USA Double Studded Adapters, Click Here.