Threaded internally weld studs are weld fasteners manufactured with an internal threaded bore, allowing mating hardware to be installed directly into the stud after welding. This design provides a permanent weld attachment while eliminating exposed external threads on the installed assembly.
| Stud Specifications | Standard Accessories | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Base Diameter (D) |
Max. Thread Tap (C) |
Max Std. Thread Depth (A) |
Minimum Length* (L) |
Flash Dimensions | Ferrule P/N |
Foot P/N |
Grip P/N |
Chuck P/N |
|
| E | F | ||||||||
| 0.25 | #8 | 0.25 | 0.5 | 0.359 | 0.109 | F025-F | B-1N | GN-025 | CN-025 |
| 0.312 | #10 | 0.281 | 0.577 | 0.438 | 0.109 | F031-F | B-1N | GN-031 | CN-031 |
| 0.375 | 1/4 - 20 | 0.375 | 0.718 | 0.5 | 0.125 | F037-F | B-1N | GN-037 | CN-037 |
| 0.438 | 5/16 - 18 | 0.468 | 0.858 | 0.578 | 0.141 | F043-F | B-1N | GN-043 | CN-043 |
| 0.5 | 3/8 - 16 | 0.562 | 0.983 | 0.688 | 0.156 | F050-F | B-1N | GN-050 | CN-050 |
| 0.625 | 1/2 - 13 | 0.75 | 1.287 | 0.797 | 0.188 | F062-F | B-2N | GN-062 | CN-062 |
| 0.75 | 5/8 - 11 | 0.937 | 1.593 | 0.938 | 0.25 | F075-F | B-2N | GN-075 | CN-075 |
| 0.875 | 3/4 - 10 | 1.125 | 1.859 | 1.094 | 0.313 | F087-F | B-3N | GN-087 | CN-087 |
| 1 | 7/8-9 | 1.312 | 2.125 | 1.25 | 0.375 | F100-F | B-3N | GN-100 | CN-100 |
| Note: The minimum length (L) is reduced when smaller thread sizes are used compared to what is shown. | |||||||||
To order or specify give: Stud Code, Dimensions D x L, C x A, Material and Quantity
Example: TI, .50 x 1, with 3/8-16 x .562, (BW), Mild Steel, 1000 pcs.
Specify (L) Length on a Before Weld basis by indicating “BW”
or on an After Weld basis by indicating “AW.”
Threaded internally weld studs are weld fasteners manufactured with an internal threaded bore, allowing mating hardware to be installed directly into the stud after welding. This design provides a permanent weld attachment while eliminating exposed external threads on the installed assembly.
Commonly specified for equipment enclosures, fabricated assemblies, panels, structural components, and industrial manufacturing applications, these internal thread weld studs provide a clean fastening interface while maintaining the installation advantages of the ARC stud welding process. Available in carbon steel and stainless steel, they can be supplied in a range of thread sizes and lengths to accommodate diverse engineering requirements.
Threaded Internally Weld Studs provide a welded attachment point with internal thread engagement, making them suitable for applications where external stud projection is undesirable or space is limited.
The threaded bore accepts mating bolts, screws, or threaded components directly into the stud body. This configuration creates a concealed fastening point while maintaining secure mechanical attachment.
Because the threads are contained within the stud, the installed assembly maintains a cleaner exterior surface compared to externally threaded fastening solutions.
These internally threaded weld studs are manufactured for installation using the ARC stud welding process and are compatible with matching ferrules, grips, feet, and chuck assemblies.
Available in UNC, UNF, and ISO metric thread configurations, these studs can be specified to align with project fastening standards and assembly requirements.
Production options include low-carbon steel and stainless steel grades suitable for structural fabrication, industrial equipment, transportation assemblies, and corrosive environments.
Once installed, the stud becomes an integral part of the parent material, creating a durable fastening point without the need for secondary drilling, tapping, or mechanical attachment methods.
Internal thread studs provide a clean solution where exposed threads are not preferred. We can help match the appropriate thread size, body length, and material specifications to your production or fabrication requirements.