Nelson Fastener Systems Partially Threaded Stud CPL

Nelson CPL studs are recommended for fastening applications to heavy gauge base materials where development of the full fastener strength is needed. The unthreaded section minimizes the weld flash diameter and height. It also reduces the possibility of stud hang up in the ferrule cavity if gun parts are slightly misaligned. Nelson partially threaded studs have a pitch diameter weld base and are available in thread diameters of 1/4"-20 through 1”-8 with unlimited length.

Nelson makes stud weldable, high strength studs that have approximately the same physical strength as Grade 5 fasteners. Consult chart, below, for the physical properties of Nelson High Strength studs to SAE Grade 5 and comparison of ISO Class 8.8 bolts. These studs are not heat treated, and have a carbon content of 0.20% to ensure proper weldability. Nelson High Strength studs are available in 5/16-18, 3/8-16 and 1/2-13 thread sizes in the CPL weld base style, and M8, M10, and M12 metric MP weld base style. The base material to which Nelson High Strength studs are welded must be at least 70,000 psi yield strength in order to develop the full strength of these studs.

Caution: If the High Strength studs are welded to A36 (36,000 psi) structural steel, failure may occur in the base plate at less than full stud strength.