Wieländer+Schill Metric Thread Welding Studs (M6 × 20 mm), 50 pcs | 297062

Product Overview

The Wieländer+Schill Metric Thread Welding Studs (Item No: 297062) transition from the coarse T-thread profile of the previous series into a standardized M6 machine thread. Measuring 6.0 mm in diameter and 20 mm in length, these copper-plated consumable fasteners are designed for heavy-duty dent extraction, structural pulling, and creating precise, permanent mounting points on bare metal vehicle panels.

Unlike aggressive coarse threads meant exclusively for quick slide-hammer nuts, the M6 machine thread allows technicians to use standard metric nuts, washers, and specialized pulling hardware. Because it is a thicker 6mm stud, it offers higher tensile strength and shear resistance for the most demanding high-strength steel (HSS) pulls. The robust copper plating ensures clean, rapid electrical transfer during resistance spot welding.

Key Features

• M6 Metric Machine Thread: Features a standard metric pitch, allowing you to thread on standard M6 hardware, specialized pulling rings, or bolt-on brackets directly to the welded stud.

• Thicker 6mm Diameter: The step up to a 6mm core provides substantially more shear strength than standard 5mm studs, ideal for extreme pulling forces or heavy slide hammer strikes.

• 20mm Length: Offers a generous 20mm of threading to accommodate thick pulling claws, multiple stacked washers, or heavy-duty bridge puller attachments.

• High-Conductivity Copper Plating: Maximizes electrical grounding during the weld cycle, ensuring deep fusion with the host panel without generating excessive warping heat.

• Grade 4.8 Steel Core: Built from high-tensile 4.8 grade steel to withstand intense hydraulic pressure during structural repairs.

Technical Specifications & Compatibility

Ideal Use Cases & Applications

• Extreme Structural Pulls: The thicker 6mm core is preferred when correcting heavy structural damage on frame rails or reinforced pillars where a 5mm stud might stretch or snap under hydraulic load.

• Custom Anchoring / Fabrication: Because they feature a standard M6 machine thread, these studs are frequently used to permanently or temporarily mount custom brackets, grounding straps, or holding fixtures to bare metal.

• Heavy Bridge Pulling: The 20mm length perfectly accommodates thick aluminum bridge pullers and heavy-duty M6 pulling eyes.

Common Questions (FAQs)

Q: Can I use my existing 5mm pulling nuts on these studs?
A: No. These studs utilize a standard M6 machine thread. You will need M6 compatible pulling rings, specialized metric slide hammer nuts, or standard M6 shop hardware. Coarse T5 pulling nuts will not thread onto these studs.

Q: Do I need a different gun to weld these?
A: The welding guns (Pro Spot, GYS, W+S) remain exactly the same, but the chuck/collet at the tip of the gun must be sized for 6mm. If you try to force a 6mm stud into a 5mm collet, you will damage the chuck. (Note: W+S's specific 497023 electrode is uniquely designed to clamp both 5mm and 6mm studs).

Q: Do I need to remove the paint before welding these studs?
A: Yes. Just like the coarse thread variants, the M6 studs require a clean, bare metal surface to establish a proper electrical ground for resistance spot welding.