Studio view of the white Bosch HBT187 bi-metal hole saw featuring red logo text and triangular side slots.
Infographic highlighting key features of the hole saw including triangle slot design, enhanced M42 alloy, progressor tooth design, and reinforced shoulders.
Dimension graphic of the hole saw displaying a cutting diameter of 1.88 inches and a cup height of 1.93 inches.
High-angle action shot of the hole saw cutting a clean hole into a white wooden door panel.
A worker uses a Bosch drill and the hole saw to cut through the side of a grey metal electrical panel box.
Action shot of the hole saw drilling into a white countertop surface with sawdust accumulating around the cut.
Hands wearing protective gloves attaching the white hole saw cup to a drill arbor and pilot bit.
Macro view of the hole saw's cutting edge highlighting the sharp, alternating progressor tooth geometry.
Close-up action shot of the hole saw cutting into a metal electrical enclosure with a Bosch cordless drill.
Studio view of the white Bosch HBT187 bi-metal hole saw featuring red logo text and triangular side slots.
Infographic highlighting key features of the hole saw including triangle slot design, enhanced M42 alloy, progressor tooth design, and reinforced shoulders.
Dimension graphic of the hole saw displaying a cutting diameter of 1.88 inches and a cup height of 1.93 inches.
High-angle action shot of the hole saw cutting a clean hole into a white wooden door panel.
A worker uses a Bosch drill and the hole saw to cut through the side of a grey metal electrical panel box.
Action shot of the hole saw drilling into a white countertop surface with sawdust accumulating around the cut.
Hands wearing protective gloves attaching the white hole saw cup to a drill arbor and pilot bit.
Macro view of the hole saw's cutting edge highlighting the sharp, alternating progressor tooth geometry.
Close-up action shot of the hole saw cutting into a metal electrical enclosure with a Bosch cordless drill.
BOSCH

Bosch HBT187 1-7/8 Inch Bi-Metal Hole Saw M42 Cobalt Alloy 5 TPI Progressor Tooth for Wood Metal and Plastic

In stock
SKU: HBT187
$12.59

Description

ENHANCED DURABILITY AND SPEED WITH M42 COBALT TECHNOLOGY

Upgrade your drilling performance with the Bosch HBT187 1-7/8 Inch Bi-Metal Hole Saw. Engineered for the toughest job site challenges, this hole saw is crafted from Bosch’s enhanced M42 alloy material, containing 8% cobalt. This premium formulation provides superior heat resistance and increases the tool's life by up to 20% compared to standard bi-metal saws. Whether you are cutting through wood, heavy-duty metal, drywall, or plastic, the HBT187 delivers clean, precise cuts time and time again, making it a reliable staple for electricians, plumbers, and general contractors.

The design of the HBT187 is packed with efficiency-boosting features. It utilizes the "Progressor" tooth design with a 5 TPI configuration to cut faster and stay sharp longer. The innovative triangle slot design on the side walls solves the common frustration of stuck plugs, allowing for quick and easy debris removal while also reducing heat buildup during operation. With a reinforced shoulder for added strength and a deep 1-3/4 inch cup to handle thick materials, this hole saw is built to take a bite out of any project.

Key Features

  • Enhanced M42 Alloy: Features 8% cobalt composition for high heat resistance and up to 20% longer life.
  • Triangle Slot Design: "Shark tooth" side slots allow for easy plug ejection and improved heat dissipation.
  • Progressor Tooth Geometry: Alternating tooth sizes (5 TPI) ensure faster cutting speeds and cleaner holes.
  • Deep Cup Capacity: 1-3/4 inch cutting depth easily handles 2x lumber, thick drywall, and multilayered materials.
  • Reinforced Shoulder: Adds structural strength to the base of the saw to prevent failure under high torque.
  • Versatile Application: Optimized for cutting wood, plastic, metal, and stainless steel.
  • Universal Compatibility: Works with standard hole saw arbors and Spinlock universal arbors (sold separately).

What's Included

(1) 1-7/8 Inch Bi-Metal M42 Hole Saw (Arbor and Pilot Bit Sold Separately)

Specifications

Manufacturer Bosch
Model Number HBT187
Saw Diameter 1-7/8 in.
Max Cutting Depth 1-3/4 in.
Teeth Per Inch (TPI) 5
Blade Material Bi-Metal M42 (8% Cobalt)
Tooth Design Progressor
Arbor Included No
Applications Wood, Metal, Plastic, Drywall
Weight 0.26 lbs
Side Slots Triangle (Shark Tooth)

Pro-Tip: To maximize the life of your M42 hole saw when drilling through metal, operate your drill at a lower RPM and apply cutting oil to the surface. This reduces friction and heat buildup, which keeps the cobalt teeth sharper for longer. Use the triangle side slots to lever out the material plug immediately after cutting to keep your workflow moving.