Milwaukee 5/16 in. D X 18 in. L Bellhanger Auger Bit High Speed Steel

Meet the Milwaukee 5/16 in. D x 18 in. L Bellhanger Auger Bit High Speed Steel—a purpose-built tool for professional low-voltage installations. Designed to efficiently create clean, straight bores for pulling small-diameter wires, this bit is built to keep up with demanding job sites and long runs through wooden structures.

Key specifications

• Diameter: 5/16 in
• Length: 18 in
• Shank: 3-Flat Shank
• Material: High Speed Steel
• Heat Treated: Yes
• Product Type: Auger Bit
• Usage: Designed for installing all types of small wire systems including computer, security, phone, and cable
• Packaging: Boxed

Why this bellhanger auger bit stands out

Milwaukee’s Bellhanger Auger Bit combines durable high-speed steel with a heat-treated edge to stand up to repeated use on tough framing. The 18-inch length is purpose-built for deeper runs through walls and joists, reducing the need to reposition or switch bits mid-job. A 3-flat shank delivers a secure grip in the drill chuck, minimizing slip and maintaining consistent torque for smoother drilling, even in tight cavities.

With its bellhanger design, the bit is optimized to move wood chips away from the cutting edge, helping you maintain a clear bore path as you feed wire through studs. The result is cleaner holes, faster wire pulls, and less rework—key advantages when you're installing network cables, security wiring, or multi-line phone systems.

Ideal use cases

• Pulling computer network cables through walls and between rooms
• Installing security system wiring, cameras, and door sensors in new or retrofit builds
• Running telephone and data lines where long, straight bores are required
• Low-voltage installations in wooden studs and joists where a precise 5/16" bore is needed

Practical tips for best results

• Start with a clean pilot path in the wood and maintain a steady drilling rate to prevent wandering.
• Use moderate feed pressure and let the high-speed steel bit do the cutting; avoid forcing the bit through material.
• Periodically pull back to clear wood chips and prevent overheating, especially on long runs.
• After use, wipe the bit to remove dust and debris; store it in its boxed packaging to protect the cutting edge.

Whether you're an electrician, AV installer, or a DIYer tackling home wiring, the Milwaukee 5/16 in. x 18 in. Bellhanger Auger Bit in High Speed Steel delivers the durability, precision, and long-reach performance you need to complete clean, professional installations.