Gibraltar SID-941-G Gooseneck Clamp Forged Steel Astm A521

Product Description

The GIBRALTAR SID-941-G is a forged steel gooseneck clamp designed for secure workholding and fixturing applications in machining, fabrication, and toolroom environments. Built to ASTM A521 standards and rated Class CA, this clamp measures 6 inches overall length, 1-3/4 inches overall width, and 1-9/16 inches overall height. The gooseneck profile allows the clamp to step over obstructions and apply clamping force directly to a workpiece surface. Machinists, tool and die makers, and fabrication professionals use this style of clamp on milling machines, drill presses, and fixture plates where a low-profile hold-down solution is required.

The SID-941-G is suited for use on manual and CNC machining centers, surface plates, and custom fixturing setups in both job shop and production environments. The slot dimensions of 1-11/16 inches length by 11/16 inches width accommodate standard T-slot hardware. A neck length of 1-1/8 inches provides clearance for stepped workpieces and irregularly shaped parts. This clamp ships individually and is available for single-unit ordering.

Key Features

• Forged steel construction to ASTM A521, Class CA for high strength and durability
• Gooseneck profile steps over workpiece edges for direct surface clamping
• Slot dimensions: 1-11/16 inches length by 11/16 inches slot width for standard T-slot hardware
• Neck length of 1-1/8 inches provides clearance for stepped or irregular workpieces
• Compact form factor: 6 inches OAL, 1-3/4 inches wide, 1-9/16 inches tall
• Not drilled or tapped — ready for standard stud-and-strap clamping setups

Compatibility

Designed for use with 11/16 inch stud hardware on standard T-slot milling tables, drill press tables, and modular fixturing systems that accept this slot width.

Installation Notes

Installation is performed by machinists or toolroom technicians using standard T-slot nuts, studs, and step blocks. Ensure the machine table is powered down and all moving elements are at rest before adjusting or repositioning clamps on the work surface. Use a torque wrench appropriate for the stud size to achieve consistent clamping force without distorting the workpiece. Always verify that the clamp is seated flat and that the stud is centered in the slot before engaging the machine.