Hillman 375221 Tapcon Masonry Drill Bit 5/32 X 4-1/2 in

Product Description

The HILLMAN 375221 is a carbide-tipped masonry drill bit designed for use with Tapcon-style concrete anchors. It bores clean, accurate pilot holes into concrete, block, and brick, allowing Tapcon fasteners to thread in properly and hold with full rated strength. The 135-degree split-point tip reduces walking on entry and cuts through hard masonry with less effort. At 0.052 pounds, this is a single-use or low-volume bit suited for anchor installation tasks on the job site or in the field. Licensed trades and general contractors reach for this bit whenever hard substrate anchoring is required.

This bit is intended for drilling pilot holes ahead of Tapcon-style concrete screw anchors in residential and light commercial applications. Common install scenarios include securing electrical conduit straps, plumbing hangers, HVAC equipment bases, and structural brackets to concrete floors, walls, and block foundations. The 5/32-inch diameter and 4-1/2-inch length match standard short Tapcon anchor sizing requirements.

Key Features

• Carbide-tipped cutting edge for durability in concrete, brick, and block
• 135-degree tip angle reduces bit walking on entry
• 5/32-inch diameter sized for standard Tapcon anchor pilot holes
• 4-1/2-inch length provides adequate depth clearance for anchor seating
• Lightweight at 0.052 pounds for easy handling

Compatibility

Designed as an OEM-style replacement drill bit for use with standard 5/32-inch diameter Tapcon masonry anchor systems in concrete, brick, and block substrates.

Installation Notes

This bit is installed by licensed contractors, electricians, plumbers, and HVAC technicians when anchoring into hard masonry substrates. Use with a hammer drill set to hammer mode for best performance in concrete or block. Ensure the drill depth meets or exceeds the anchor embedment requirement before driving fasteners. Inspect the bit tip for carbide chipping before each use and replace if worn to avoid oversized holes.

Technical Specifications

• Diameter: 5/32 inches
• Length: 4-1/2 inches
• Tip Angle: 135 degrees
• Tip Material: Carbide
• Weight: 0.052 pounds
• Unit of Measure: Pack
• Minimum Order Quantity: 1

Standard Information

• Brand: HILLMAN
• Manufacturer Part Number: 375221