Studio view of the Bosch HSBAM hole saw mandrel featuring a 3/8-inch hex shank, black threaded adapter, and a silver high-speed steel pilot bit.
Vertical profile of the quick-change mandrel showing the hex shank at the bottom, the threaded collar, and the spiral flute pilot bit extending upward.
Disassembled view of the mandrel components displaying the silver pilot bit, the black mandrel body with hex shank, and a metal washer.
Infographic illustrating the "Quick Change" system, showing how the pilot bit, adapter, and hole saw cup connect, with text stating "Fits all major brands."
Scale graphic showing the mandrel held in a grey hand silhouette, indicating an overall length of approximately 4.1 inches or 10 cm.
Studio view of the Bosch HSBAM hole saw mandrel featuring a 3/8-inch hex shank, black threaded adapter, and a silver high-speed steel pilot bit.
Vertical profile of the quick-change mandrel showing the hex shank at the bottom, the threaded collar, and the spiral flute pilot bit extending upward.
Disassembled view of the mandrel components displaying the silver pilot bit, the black mandrel body with hex shank, and a metal washer.
Infographic illustrating the "Quick Change" system, showing how the pilot bit, adapter, and hole saw cup connect, with text stating "Fits all major brands."
Scale graphic showing the mandrel held in a grey hand silhouette, indicating an overall length of approximately 4.1 inches or 10 cm.
BOSCH

Bosch HSBAM Quick Change Hole Saw Mandrel 3/8 Inch Hex Shank with Pilot Bit for Sizes 9/16 to 1-3/16 Inch

In stock
SKU: HSBAM
$9.49

Description

RAPID ACCESSORY CHANGES FOR MAXIMUM PRODUCTIVITY

Streamline your drilling operations with the Bosch HSBAM Quick Change Hole Saw Mandrel. Designed for professionals who demand efficiency, this arbor features Bosch’s patented Quick Change™ system, allowing you to swap out hole saw cups in seconds without the need for additional tools. This "A-Size" mandrel is specifically engineered to secure hole saws ranging from 9/16 inch to 1-3/16 inch diameter, providing a wobble-free connection for precise, clean cuts in wood, metal, and plastic.

The HSBAM is built with a durable 3/8-inch hex shank that ensures a positive, non-slip grip in standard drill chucks, transferring maximum torque to the cutting edge. It comes complete with a high-speed steel pilot bit that features a split-point tip, designed to start on contact without walking or skating—eliminating the need for a center punch. Whether you are an electrician, plumber, or general contractor, this universal mandrel fits all major brands of hole saws, making it a versatile and essential upgrade for your toolkit.

Key Features

  • Quick Change System: Allows for tool-free removal and attachment of hole saws in seconds.
  • Universal Fit: Compatible with all major brands of standard hole saws.
  • Optimized Size Range: Designed specifically for small diameter hole saws from 9/16 in. to 1-3/16 in.
  • Secure Grip: 3/8-inch hex shank prevents slippage in the drill chuck during high-torque applications.
  • Precision Pilot Bit: Includes a high-speed steel pilot bit with split-point geometry for accurate starting.
  • Durable Construction: Hardened steel body withstands the rigors of daily professional use.

What's Included

(1) Quick Change Mandrel, (1) High-Speed Steel Pilot Bit

Specifications

Manufacturer Bosch
Model Number HSBAM
Product Type Hole Saw Mandrel
Hole Saw Size Compatibility 9/16 in. - 1-3/16 in.
Shank Size 3/8 in. Hex
Pilot Bit Material High Speed Steel (HSS)
Arbor Thread Size 1/2-20 Thread
Arbor Length 6.0 in.
Mandrel Weight 0.17 lbs
System Quick Change™

Pro-Tip: To prevent the hole saw from locking onto the mandrel too tightly after heavy use, ensure the drive pins (if applicable on your specific cup model) are fully engaged, and apply a very small amount of anti-seize or grease to the threads before attaching the hole saw. This makes removal significantly easier later.