Bessey STB80M Deep-Reach Screw Clamp 800mm Clamping Width 175mm Throat Depth

When working on large panels, deep frames, or wide assemblies, standard clamps often fall short—literally. The Bessey STB80M solves that problem with an impressive 800 mm clamping width and a deep 175 mm throat, allowing you to reach far into workpieces with confidence. Built on a robust profiled steel rail and equipped with a smooth trapezoidal-thread spindle, this clamp delivers up to 6,000 N of force without flexing or slipping.

Who is it for

Professional woodworkers, metal fabricators, and serious DIYers who need reliable, high-pressure clamping for large or deep workpieces. Whether you're gluing up cabinet panels, welding frames, or assembling jigs, the STB80M provides the reach and strength required for demanding tasks.

Main features

• Maximum clamping width: 800 mm – handles wide stock and assemblies.
• Throat depth: 175 mm – reaches deep into panels and frames.
• Clamping force up to 6,000 N – secure, vibration-resistant hold.
• High-quality profiled steel rail (30 x 15 mm) – resists bending under load.
• Fixed jaw and pressure plate forged from one piece of tempered steel – exceptional durability.
• Smooth-running trapezoidal-thread spindle – quick, precise adjustment.
• Ergonomic wooden handle – comfortable grip for high torque.
• Swiveling, heat-resistant pressure plate – adapts to angled surfaces and withstands welding spatter.
• Galvanized finish – corrosion protection for long service life.

Specifications

• Brand: Bessey
• Model: STB80M
• MPN: STB80M
• EAN: 4008158007663
• Product type: Screw Clamp
• Clamping width: 800 mm
• Throat depth: 175 mm
• Clamping force: 6,000 N
• Rail dimensions: 30 x 15 mm
• Rail material: Profiled steel
• Fixed jaw material: Tempered steel
• Spindle type: Trapezoidal thread
• Handle material: Wood
• Pressure plate: Swiveling, heat-resistant
• Finish: Galvanized

Tips

For best results, ensure the workpiece is properly supported before applying full clamping force. The swiveling pressure plate automatically adjusts to angled surfaces, reducing the risk of denting or slipping. Keep the spindle threads clean and lightly lubricated for smooth operation over years of use.