Gibraltar SID-901A-G Heel Clamp 4in Oal 11/16in Stud Forged Steel

Product Description

The GIBRALTAR SID-901A-G is a forged steel heel clamp designed for secure workholding and fixturing applications in industrial and machining environments. Built to ASTM A521 Class CA standards, it delivers consistent clamping force through a tapped slot configuration. The clamp measures 4 inches in overall length, 1-5/8 inches in overall width, and 3/4 inches in overall height, with an 11/16-inch stud size and 11/16-inch travel. The slotted design accepts a 1/2-13 tap size and provides 11/16-inch of lateral adjustment through a 1-3/8-inch long by 11/16-inch wide slot. Licensed machinists, tooling technicians, and maintenance professionals typically specify this component for precision fixture setups.

The SID-901A-G heel clamp is suited for use on milling machines, drill presses, and general-purpose machining fixtures where a low-profile, tapped clamp is required. The heel-style geometry directs clamping force downward onto the workpiece, making it appropriate for flat or stepped workpiece surfaces in both job shop and production environments. Its compact height of 3/4 inches makes it viable in setups with limited vertical clearance.

Key Features

• Forged steel construction rated to ASTM A521 Class CA for high-strength clamping duty
• Tapped slot accepts 1/2-13 fastener for direct stud engagement
• 11/16-inch stud size with 11/16-inch travel for lateral positioning flexibility
• Low-profile design at 3/4 inches overall height for restricted-clearance setups
• Slotted opening measures 1-3/8 inches long by 11/16 inches wide for adjustable positioning
• Heel clamp geometry directs clamping force downward onto the workpiece surface

Compatibility

Designed as an OEM-style replacement or direct-use heel clamp for standard T-slot fixturing systems accepting an 11/16-inch stud with a 1/2-13 tapped interface.

Installation Notes

Installation is performed by tooling technicians or machinists familiar with workholding setups. Disengage machine power and confirm the table is stationary before positioning or adjusting the clamp. Torque the stud fastener to the fixture manufacturer's specification using appropriate hand tools — do not use impact drivers on tapped clamp slots. Inspect the forged body for cracks or deformation before each use and replace if structural integrity is in question.