Threlaco Double Shear Seat Belt Tabs 4-Pack — 1/2" Hole Weld-On Iron Harness Mounts

Threlaco 4 Pack Double Shear Tabs are welded mounting brackets designed to securely attach seat belts, limit straps, and harnesses using a robust double-shear connection.

These weld-on tabs are made from thick iron and shaped to accept common harness hardware, offering a dependable anchor point for offroad vehicles, UTVs, race cars, and custom fabrication projects. Built for both garage fabricators and professional shops, each tab has a 1/2" hole accommodation, a 5/16" inner gap, and a 1 1/4" distance from hole center to tab base to simplify alignment and integration with standard safety belts and limit straps.

How do these tabs improve harness attachment reliability?

Double shear tabs transfer load across two material faces, which reduces bending and concentrates weld strength where it's needed. The flat base and consistent hole spacing make it easier to create a perpendicular, well-supported anchor point.

• Double-shear geometry distributes forces for stronger mounting.
• Flat base promotes flush welds and precise alignment.
• Pre-sized hole and gap match common belt hardware for quick fitment.

What materials and dimensions should I expect for welding and rust prevention?

Each tab is crafted from robust iron designed to accept strong, repeated welds. They leave the factory rust-free, but long shipping routes can produce surface oxidation; simple rust removal restores a clean welding surface.

• Iron construction suitable for welding and heavy-duty applications.
• 1/8"–1/2" hole thickness per side and 5/16" inner diameter gap.
• 1 1/4" center-to-base distance for consistent fitment.

Are these easy to install for DIYers and pros?

The tabs are intentionally shaped and sized to be user-friendly for both experienced fabricators and hobbyists. Their simple geometry reduces setup time and helps produce consistent, effective welds with basic jigging or clamps.

• Flat mounting surface for rapid tacking and welding.
• Compatible with standard harness hardware to avoid modifications.
• Works with common welding methods—MIG, TIG, and stick—when proper procedures are followed.

Which applications are these weld-on tabs best suited for?

These double shear tabs excel wherever a compact, high-strength anchor point is needed: seat belts, limit straps, suspension stops, and custom mounting brackets. They’re commonly used in motorsport cages, UTV roll cages, trailer builds, and industrial fixtures.

• Offroad and UTV harness mounts.
• Race car and roll-cage safety belt attachment points.
• Limit strap and suspension stop installations.

Who is this for? Fabricators, track teams, offroad enthusiasts, and shop professionals who need affordable, weld-ready mounting tabs that fit standard belt hardware will appreciate this Threlaco 4-pack. It’s also a useful item for hobbyist welders building or repairing vehicles, trailers, and custom equipment that require secure, repeatable anchor points.