Product Description
Milwaukee SDS+ Bit 3/8 in. x 16 in. x 18 in.
Model Number: 48-20-7457
The Milwaukee 48-20-7457 is an SDS+ rotary hammer drill bit in 3/8 in. diameter with a 16 in. working length and 18 in. overall length — a deep-reach SDS+ concrete bit for heavy-duty anchor installations, through-wall conduit penetrations, and structural anchor drilling in thick concrete sections where standard-length bits cannot achieve adequate depth. The 3/8 in. diameter is among the most heavily used anchor drilling sizes in commercial and residential concrete construction, accommodating a wide range of wedge anchors, sleeve anchors, drop-in anchors, and epoxy anchor systems commonly used for structural connections, equipment mounting, conduit support, and overhead installations. Milwaukee SDS+ bits feature carbide vacuum-brazed to heat-treated steel shanks for maximum tip retention under the sustained rotary hammer impacts of production anchor drilling.
The 18 in. overall length provides the working reach needed for through-wall penetrations in standard 8 in. and 10 in. CMU block construction, for anchor installations in thick concrete foundations and slabs requiring deeper embedment for higher load ratings, and for conduit sleeve drilling through thicker concrete structural elements. At this extended length, flute engineering becomes a critical performance factor — Milwaukee's optimized spiral flute geometry efficiently evacuates pulverized concrete dust and aggregate fragments from the full 16 in. working depth throughout the drilling operation, preventing the hole choking, bit binding, and dramatic penetration rate reduction that occurs with poorly engineered extended-length bits on the market. The SDS+ shank provides positive tool-free locking in all SDS+ rotary hammers for secure bit retention during the combined rotation and hammering of heavy-duty anchor drilling.
Available in individual packaging for single-application purchasing and in 25-pack bulk quantities for high-volume anchor installation crews who regularly install large numbers of 3/8 in. anchors on commercial concrete projects and benefit from reduced per-bit cost.
Features
- Carbide tip vacuum-brazed to heat-treated steel shank for maximum retention under heavy impacts
- 18 in. overall length for through-wall and deep embedment anchor drilling
- Optimized spiral fluting for continuous debris ejection throughout full working depth
- 3/8 in. diameter covers wedge, sleeve, drop-in, and epoxy anchor systems
- SDS+ shank for tool-free positive locking on all SDS+ rotary hammers
Specifications
- Diameter: 3/8 in.
- Working Length: 16 in.
- Overall Length: 18 in.
- Shank: SDS+
- Tip: Carbide, Vacuum-Brazed
Includes
- (1) Milwaukee 48-20-7457 SDS+ Bit 3/8 in. x 16 in. x 18 in.
