Weld Studs
Break-Away – Deformed Bar - Fully Threaded
Specialized applications often call for unique Weld Stud solutions.
Fig. 1
Shown is a Fully Threaded Weld Stud, 3/8” diameter x 1-1/4” long. The problem in this application is it only allows for the Weld Stud to extend 3/4” from the surface of the steel substrate. This would not leave enough material for the stud gun to operate. To alleviate the problem the weld stud was elongated and a thread relief was added.
The extension section only serves to allow the stud gun to grip the piece and provide a path for the electric current to pass to the flux and substrate.
Once the stud is securely welded the extension piece easily breaks away using a pliers, or can be quickly removed with an angle grinder. This leaves the required 3/4” and the remaining thread is properly chamfered to allow correct nut-fit.
Fig. 2
A sub-set, or variation on standard rebar, the Deformed Bar has indentations where rebar has external ribs. They function similarly in that they offer a firm grip on the surrounding concrete.
Deformed Bar can be arc welded, the same as standard weld studs. This saves considerable time in fabrication.
Using low carbon steel, ASTM A-496/A-1064, standard deformed bar provides;
Tensile 80,000 psi min
Yield 70,000 psi min
Standard sizes are 3/8” dia. to 3/4” dia. with lengths from 6-1/8” to 36-3/16”.
Sizes can also be made to order based on your specification.
Fig. 3
Using the same principles Fully Threaded Studs and Rods can be arc welded save considerable time and expense.
Typical threaded rods are made from ASTM A29/A108 steel. This provides;
Tensile 61,000 psi
Yield 49,000 psi
Fully Threaded Rods can be sized from .19” diameter to 1.00”. Length must be a minimum of 5/8” with the maximum length being unlimited.
Weld Studs are also available in any grade of stainless steel. Specifications can include plating using copper, nickel, zinc and zinc dichromat. Studs can also be annealed if greater ductility is required.
Stock Sizes or Made to Order
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