Description
The M16 Reduced Base Arc Stud is a Class 4.8 threaded weld stud designed for drawn arc stud welding applications where a reduced base diameter and compact clearance are required.
The reduced base means the shank diameter is smaller than the major diameter of the thread. With an M16 thread diameter and 13.2mm reduced base diameter, the design helps decrease the clearance hole size required around the stud.
A flux ball is incorporated into the end of the stud to help stabilise the electric arc during the welding process, resulting in a stronger and cleaner weld.
The nominal stud length refers to the approximate after-weld length. Before welding, the stud is approximately 3–4mm longer to allow for the material consumed during the welding process.
Manufactured in Class 4.8 plain steel to AS 1554.2, these reduced base arc studs are suitable for construction, fabrication, wear plates, automotive and electronic assemblies, as well as applications where space around the stud is limited.
Key Features
- M16 reduced base arc weld stud
- Class 4.8 steel
- Plain finish
- Manufactured to AS 1554.2
- 16mm nominal thread diameter
- Reduced 13.2mm base diameter
- Reduced base helps decrease required clearance hole size
- Designed for drawn arc stud welding
- Flux ball incorporated into the end of the stud
- Flux ball helps stabilise the electric arc during welding
- Designed to provide a strong, clean weld
- Suitable for applications with limited clearance around the stud
- Available in 40mm, 50mm, 55mm and 65mm nominal lengths
Applications
Suitable for:
- Wear plates
- Construction
- Steel fabrication
- Electronic assemblies
- Automotive assemblies
- Applications requiring limited space around the stud
- Applications requiring reduced clearance hole sizes
- Drawn arc stud welding applications
Available Sizes & Part Numbers
| Size | Part Number | QFind |
|---|---|---|
| M16 x 40mm | MSSMSRDM160040 | SRD1640 |
| M16 x 50mm | MSSMSRDM160050 | SRD1650 |
| M16 x 55mm | MSSMSRDM160055 | SRD1655 |
| M16 x 65mm | MSSMSRDM160065 | SRD1665 |
Dimensions
| Size | Thread Length (T) | Before-Weld Length (L) | Thread Diameter (d1) | Reduced Base Diameter (d2) |
|---|---|---|---|---|
| M16 x 40mm | 33mm | 43mm | 16mm | 13.2mm |
| M16 x 50mm | 42.5mm | 53.6mm | 16mm | 13.2mm |
| M16 x 55mm | 47.5mm | 58.6mm | 16mm | 13.2mm |
| M16 x 65mm | 57.5mm | 68.6mm | 16mm | 13.2mm |
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Reduced Base Arc Stud |
| Thread Size | M16 |
| Property Class | Class 4.8 |
| Finish | Plain |
| Standard | AS 1554.2 |
| Thread Diameter (d1) | 16mm |
| Reduced Base Diameter (d2) | 13.2mm |
| Nominal Lengths | 40mm, 50mm, 55mm, 65mm |
| Welding Application | Drawn Arc Stud Welding |
| Stud End | Flux Ball |
| Part Numbers | MSSMSRDM160040, MSSMSRDM160050, MSSMSRDM160055, MSSMSRDM160065 |
| QFind Codes | SRD1640, SRD1650, SRD1655, SRD1665 |
How the Reduced Base Design Works
Unlike a standard full-diameter threaded stud, the reduced base has a smaller shank diameter than the major diameter of the thread.
For this range:
Thread diameter (d1): 16mm
Reduced base diameter (d2): 13.2mm
The smaller base diameter helps reduce the required clearance hole size, making the stud particularly useful where space around the fixing is limited.
The stud also incorporates a flux ball at the end. During drawn arc welding, this helps stabilise the electric arc and assists in producing a strong, clean weld.
The stud is manufactured slightly longer than its finished nominal length. Approximately 3–4mm of additional length is provided before welding to account for the welding process.
