Bessey 660S-18 Sliding Arm Bar Clamp 18 in F-style

Product Description

The BESSEY 660S-18 is an F-style sliding arm bar clamp rated for an 18-inch maximum clamping capacity and a 4-inch throat depth. It delivers up to 726 pounds of clamping pressure through a 5/8-inch spindle machined from high carbon steel. The frame and pad material are steel, finished in an electrogalvanized coating for corrosion resistance. The T-handle is forged steel, providing firm grip and controlled torque during tightening. This clamp is part of the 660S series and is built for shop and field use by carpenters, millwrights, metal fabricators, and general tradespeople who need reliable, repeatable holding force on flat or parallel workpieces.

The 660S-18 suits woodworking, metal fabrication, and general assembly applications where an F-style clamp is the standard choice. The sliding arm design allows quick jaw adjustment along the 18-inch rail before final tightening, making it practical for repetitive clamping tasks. The 7/8 x 11/32-inch rail profile is a patented geometry that contributes to rack resistance under load. Light-duty replaceable swivel pads protect workpiece surfaces during clamping. This clamp is appropriate for both bench and on-site use across residential and light commercial trade work.

Key Features

• 18-inch maximum clamping capacity with a 4-inch throat depth for reach on wider stock
• 726 pounds of clamping pressure for firm, reliable hold on metal or wood assemblies
• 5/8-inch high carbon steel spindle for durability under repeated load cycles
• Patented 7/8 x 11/32-inch rail profile resists racking under clamping force
• Forged steel T-handle for controlled, ergonomic tightening
• Replaceable light-duty swivel pads protect finished and unfinished workpiece surfaces
• Electrogalvanized finish provides corrosion resistance in shop and field environments

Compatibility

Designed as an OEM-style F-clamp for general clamping applications in woodworking, metal fabrication, and light assembly work where an 18-inch bar clamp with a 4-inch throat depth is required.

Installation Notes

This clamp is a hand tool requiring no power source or special installation. Slide the movable arm to approximate jaw spacing before engaging the spindle to avoid unnecessary thread travel. Inspect swivel pads before each use and replace them when worn to prevent marring of workpieces. When clamping near finished surfaces, confirm pad condition and consider using additional protective material between the pad and the surface.