Threaded Partially Weld Studs incorporate a threaded fastening section and a smooth, unthreaded body between the weld base and thread run-out. This configuration is commonly specified when assemblies require a predetermined projection length, component spacing, or clearance zone adjacent to the weld location.
Widely used in fabricated steel assemblies, electrical enclosures, equipment housings, transportation components, and industrial manufacturing, these studs provide a permanent welded attachment while preserving a dedicated shoulder section for mounting applications. Available in carbon steel and stainless steel, they can be supplied in coarse, fine, and metric thread configurations for compatibility with a broad range of fastening systems.
| Thread Size | Minimum Length | Base Diameter | Base Length | Flash Dimensions | Ferrule P/N | Foot P/N | Grip P/N | Chuck P/N | |
|---|---|---|---|---|---|---|---|---|---|
| E | F | ||||||||
| 1/4-20 | 0.75 | 0.215 | 0.375 | 0.313 | 0.094 | F025-P | B-1N | GN-025 | CN-025 |
| 5/16-18 | 0.75 | 0.275 | 0.375 | 0.406 | 0.109 | F031-P | B-1N | GN-031 | CN-031 |
| 3/8-16 | 0.75 | 0.33 | 0.375 | 0.469 | 0.109 | F037-P | B-1N | GN-037 | CN-037 |
| 7/16-14 | 0.75 | 0.387 | 0.437 | 0.531 | 0.125 | F043-P | B-1N | GN-043 | CN-043 |
| 1/2-13 | 0.875 | 0.444 | 0.5 | 0.594 | 0.156 | F050-P | B-1N | GN-050 | CN-050 |
| 5/8-11 | 1 | 0.562 | 0.625 | 0.75 | 0.188 | F062-P | B-2N | GN-062 | CN-062 |
| 3/4-10 | 1.375 | 0.68 | 0.796 | 0.922 | 0.25 | F075-P | B-2N | GN-075 | CN-075 |
| 7/8-9 | 1.375 | 0.798 | 0.859 | 1.047 | 0.313 | F087-P | B-3N | GN-087 | CN-087 |
| 1-8 | 1.5 | 0.915 | 0.921 | 1.188 | 0.344 | F100-P | B-3N | GN-100 | CN-100 |
How to Order or Specify: Stud Code, Diameter, Length, Material and Quantity.
Example: TP, 3/8-16 x 1.125, (BW), Mild Steel, 1000 pcs.
Note: Specify (L) Length on a Before Weld basis by indicating “BW” or on an After Weld basis by indicating “AW.”
Threaded Partially Weld Studs are frequently selected when design requirements call for a weld-mounted fastener with a defined non-threaded section. The smooth body portion can serve functional and dimensional purposes that are not achievable with fully threaded designs.
The unthreaded section establishes a fixed distance between the weld surface and the threaded engagement area. This arrangement can simplify assembly layouts where component positioning must remain consistent.
The shoulder area provides a continuous cylindrical surface that can accommodate spacers, brackets, bushings, or mounted components without thread interference along the contact area.
By locating the threads above the shoulder section, the fastening area remains separated from the weld interface. This design creates a clear transition between the welded attachment point and the mechanical fastening section.
Standard production utilizes UNC thread forms, with UNF and ISO metric options available. This flexibility allows the stud to be incorporated into a variety of fastening systems and engineering specifications.
Manufactured for use with the ARC stud welding process, these studs are designed to work with corresponding ferrules, chucks, grips, and foot assemblies matched to the stud diameter.
The combination of a weld base, smooth shoulder, and threaded section makes these studs suitable for mounting applications requiring attachment, alignment, spacing, and component retention within a single fastener.
If your application requires a particular thread length, body length, or material grade, we can help match the correct Threaded Partially Weld Stud to your fabrication or assembly requirements.