Bessey MMS-4 Bar Clamp

The Bessey MMS-4 is a 4" capacity, all-steel F-style bar clamp built for metalworking and light-duty shop tasks, delivering up to 400 pounds of clamping force. It has a 2-1/4" throat depth, a compact weight around 0.60 lb, and a sliding steel bar with a Tommy bar that features rounded ends for comfortable, controlled tightening. This model uses a standard rail profile with crimped-on swivel pads and is designed for precise, repeatable clamping in tight spaces. The MMS-4 is part of Bessey’s light-duty traditional bar clamps lineup, offering a reliable clamp for metalworking tasks that require steady pressure in a compact form factor. With its 4" jaw opening, it handles small assemblies and fixtures where clamping force is essential without overloading the workpiece. Its all-steel construction and straightforward operation make it a dependable choice for metalworking tasks such as welding setups, jig and fixture work, and general immobilization of small workpieces.