Value Collection ST0740128 Bridge Reamer 1-7/16 in Hss 4MT

Product Description

The VALUE COLLECTION ST0740128 is a bridge reamer designed for enlarging and aligning drilled holes in structural steel and heavy fabrication work. Built from high-speed steel with a bright, uncoated finish, it delivers consistent cutting performance across a range of ferrous metals. The reamer measures 1-7/16 inches in diameter at the cutting end and 1-3/16 inches at the small end, with a 7-3/8-inch flute length and a 13-inch overall length. A 4MT Morse taper shank provides secure seating in compatible spindles and drill press quills. With 5 spiral flutes and a left-hand spiral, right-hand cut geometry, this tool pulls chips efficiently and reduces chatter during through-hole finishing operations.

Bridge reamers are standard tools in structural steel erection, heavy equipment fabrication, and ironwork trades where bolt holes require alignment or upsizing before fastener installation. This reamer is suited for use in drill presses, magnetic base drills, and heavy-duty portable drilling equipment equipped with a 4MT spindle socket. Typical applications include beam connection plates, gussets, and structural column base plates where hole alignment is critical to fastener fit and load transfer.

Key Features

• 1-7/16 inch cutting diameter with 1-3/16 inch small end for tapered entry and progressive material removal
• 7-3/8 inch flute length provides extended reach for thick structural members
• High-speed steel construction maintains cutting edge integrity under intermittent heavy loads
• Left-hand spiral, right-hand cut geometry promotes chip evacuation away from the cutting zone
• 4MT Morse taper shank seats securely in standard taper spindles without set screws
• Bright, uncoated finish — no coating buildup to affect dimensional tolerance

Compatibility

Designed for use in drill presses and portable drilling equipment fitted with a Number 4 Morse taper (4MT) spindle socket. Suitable as a replacement or additional bridge reamer for structural steel and heavy fabrication applications requiring a 1-7/16 inch finished hole diameter.

Installation Notes

Bridge reamers should be installed and operated by qualified machinists, ironworkers, or fabrication professionals familiar with taper-shank tooling. Secure the 4MT shank fully in the spindle socket before operation and verify the drift slot alignment before engaging the workpiece. Use appropriate cutting fluid for the material being reamed to extend tool life and improve surface finish. Always power down and lock out the machine before changing or inspecting tooling.