Gibraltar 428-1078 Flat Soft Vise Jaw 12 in Fixed Aluminum

Product Description

The GIBRALTAR 428-1078 is a flat, soft, fixed vise jaw designed as a direct replacement or upgrade jaw set for 12-inch vises used in machining, fabrication, and general metalworking environments. Machined from aluminum, this fixed jaw measures 12 inches wide, 2.5 inches high, and 1.25 inches thick. The soft aluminum construction protects finished workpieces and precision components from marring or deformation during clamping. At 7.57 pounds, the jaw has substantial mass for stable, secure workholding. This part is installed by machinists, tool and die technicians, and general fabricators working in production or maintenance shop settings.

The 428-1078 is suited for bench vise applications in machine shops, maintenance facilities, and fabrication shops where workpiece protection is a priority. The flat jaw profile provides full-face contact across the workpiece, distributing clamping force evenly. It is compatible with 12-inch vises and serves as a fixed jaw replacement. This jaw is a practical choice when working with soft metals, finished surfaces, or parts that cannot tolerate jaw scoring from hardened steel contact faces.

Key Features

• Soft aluminum construction protects finished and delicate workpieces from jaw damage
• Flat jaw profile delivers uniform clamping force across the full face
• Fixed jaw design for straightforward, reliable installation
• 12-inch jaw width matches standard 12-inch vise throat width
• Compact profile at 2.5 inches high and 1.25 inches thick fits standard jaw pockets

Compatibility

Designed for use with 12-inch vises as a fixed jaw replacement. Verify jaw pocket dimensions and mounting hole pattern against existing vise hardware before installation.

Installation Notes

Installation is typically performed by a machinist or maintenance technician. Secure the vise fully in a locked or clamped position before removing or installing jaw components. Use appropriate fasteners and torque to the vise manufacturer specifications. Inspect jaw mounting surfaces for burrs or debris before seating the replacement jaw to ensure flush, stable contact.