Product Description
Milwaukee Guide Plate for 3-1/2 in. Thick Wall Core Bit
Model Number: 48-20-5173
The Milwaukee 48-20-5173 is a Guide Plate for Milwaukee 3-1/2 in. Thick Wall Core Bits — a precision drilling guide attachment that improves hole location accuracy and bit alignment during core drilling operations in concrete masonry and concrete where precise hole positioning is required for structural, mechanical, or aesthetic reasons. Core drilling accuracy is a critical performance factor in professional core drilling work — an off-center or angled core hole can miss its intended location by enough to require expensive repair, structural remediation, or sleeve repositioning, particularly in tight construction tolerances and in applications like anchor installation where the hole must align accurately with structural connection points, equipment mounting templates, and structural drawing dimensions. The guide plate provides a stable reference surface and guided center engagement that aligns the core bit to the intended hole center before drilling begins, significantly reducing the bit walking and positional drift that occur when starting a core bit on a hard concrete surface without a guide.
The 3-1/2 in. specification matches the outer barrel diameter of Milwaukee 3-1/2 in. thick wall diamond core bits — using the guide plate matched to the correct core bit size ensures proper engagement and alignment guidance throughout the entry phase of the drilling operation. Guide plates are particularly valuable in situations where hole location must be precise relative to structural elements, rebar layouts, embedded conduits, or pre-marked templates, and in overhead and horizontal drilling positions where gravity and bit weight would otherwise contribute to positional drift during bit engagement. The guide plate works in conjunction with Milwaukee's thick wall core bit system, providing the alignment assistance needed for accurate, professional core drilling results on concrete masonry unit walls, cast concrete structures, and concrete block foundations.
See Milwaukee's complete core drilling accessory lineup for guide plates in additional sizes to match other thick wall and thin wall core bit diameters in the Milwaukee system.
Features
- Precision guide for accurate hole location on 3-1/2 in. Milwaukee thick wall core bits
- Reduces bit walking and positional drift during core bit engagement on hard concrete surfaces
- Improves drilling accuracy for structural connections, anchor templates, and tight tolerances
- Particularly valuable in overhead and horizontal drilling positions
- Matched to 3-1/2 in. thick wall core bit outer barrel diameter for proper engagement
Specifications
- Compatible Bit: Milwaukee 3-1/2 in. Thick Wall Core Bit
- Application: Concrete, Concrete Masonry, CMU Block
- Function: Core Bit Alignment and Positioning Guide
Includes
- (1) Milwaukee 48-20-5173 Guide Plate for 3-1/2 in. Thick Wall Core Bit
