Gibraltar 428-1088 Flat Soft Fixed Vise Jaw 5.125in Aluminum

Product Description

The GIBRALTAR 428-1088 is a flat soft fixed vise jaw designed as a direct replacement or spare jaw for bench vises. Machined from aluminum, this soft jaw protects workpiece surfaces during clamping by conforming slightly under load rather than marring or scoring the material being held. At 5.125 inches wide, 1.5 inches high, and 0.75 inches thick, it offers a substantial clamping face suited to a range of workholding tasks. The fixed jaw design installs in the stationary jaw position of compatible vises and weighs 0.85 pounds, keeping added mass minimal.

This jaw is rated for use with 5 inch vises and is a common replacement in machine shops, fabrication shops, and maintenance environments where protecting finished or soft materials during vise work is a priority. Machinists, tool and die workers, and general maintenance technicians install soft jaws to avoid damage when clamping aluminum, brass, plastic, or finished steel parts. The flat jaw shape makes it versatile across a wide variety of part geometries.

Key Features

• Soft aluminum construction protects workpieces from clamping damage
• Flat jaw face accommodates a broad range of part shapes and sizes
• Fixed jaw type installs in the stationary jaw position
• 5.125 inch width provides a wide clamping surface
• Lightweight at 0.85 pounds, minimizing added vise mass

Compatibility

Designed for use with 5 inch vises. Verify jaw mounting hole pattern and dimensions against your specific vise model before installation.

Installation Notes

Secure the vise in a stable, non-operational state before removing or installing jaw components. Use appropriately sized fasteners and a calibrated torque wrench per the vise manufacturer's specifications when mounting the jaw. Inspect the mounting face for burrs or debris before seating the new jaw to ensure full, flat contact. This work is typically performed by machinists or maintenance technicians familiar with bench vise service procedures.