Angled studio shot of the Bosch keyless chuck adapter featuring a black textured grip collar and a silver SDS-Plus shank.
Side profile view of the HA3JAW adapter showing the locking mechanism collar and the full length of the connecting shank.
Front angled view of the chuck showing the three-jaw opening designed to securely hold straight shank drill bits.
"Best For" graphic grid displaying images of a rock, red bricks, a cinder block, and a concrete column, labeled Masonry, Brick, Block, and Concrete.
Angled studio shot of the Bosch keyless chuck adapter featuring a black textured grip collar and a silver SDS-Plus shank.
Side profile view of the HA3JAW adapter showing the locking mechanism collar and the full length of the connecting shank.
Front angled view of the chuck showing the three-jaw opening designed to securely hold straight shank drill bits.
"Best For" graphic grid displaying images of a rock, red bricks, a cinder block, and a concrete column, labeled Masonry, Brick, Block, and Concrete.
BOSCH

Bosch HA3JAW SDS-Plus Adapter 1/2 Inch Keyless Chuck 3-Jaw Heavy Duty for Rotary Hammer Drill Straight Shank Bits

Only 3 left
SKU: HA3JAW
$27.99 USD

Description

MAXIMIZE ROTARY HAMMER VERSATILITY WITH KEYLESS CONVENIENCE

Transform your SDS-Plus rotary hammer into a versatile drilling machine with the Bosch HA3JAW SDS-Plus to 1/2-Inch Keyless Chuck Adapter. This essential accessory allows professionals to bridge the gap between heavy-duty masonry work and precision drilling applications. By converting your SDS-Plus chuck to accept straight-shank drill bits, you can easily drill into wood, metal, and plastic without needing to carry a separate standard drill driver to the job site. The heavy-duty 3-jaw design ensures a secure grip on round and hex shank bits, providing accuracy and confidence during operation.

Engineered for productivity, the HA3JAW features a smooth, keyless twist-lock mechanism that enables rapid bit changes on the fly—no chuck keys to lose or fumble with. Designed specifically for use in "Rotary Only" mode, this adapter extends the utility of your existing power tools, saving you time and space in your toolbox. Whether you are a general contractor, electrician, or carpenter, this robust steel adapter delivers the Bosch reliability needed to handle diverse drilling tasks with a single tool.

Key Features

  • Universal Conversion: Instantly converts SDS-Plus rotary hammers to accept standard straight shank drill bits.
  • Keyless Design: 3-jaw keyless chuck allows for fast, tool-free bit changes to maximize job site productivity.
  • 1/2 Inch Capacity: Accommodates a wide range of round and hex shank accessories up to 1/2 inch diameter.
  • Rotary Mode Optimized: Specifically designed for drilling applications in wood and metal (Rotary Only mode).
  • Heavy-Duty Build: Constructed with durable components to withstand professional job site wear and tear.
  • SDS-Plus Shank: precise shank geometry ensures a secure fit in all standard SDS-Plus tool holders.

What's Included

(1) Bosch HA3JAW SDS-Plus to 1/2 Inch Keyless Chuck Adapter

Specifications

Manufacturer Bosch
Model Number HA3JAW
Shank Type SDS-Plus
Chuck Type Keyless 3-Jaw
Chuck Capacity 1/2 in.
Operating Mode Rotary Only (Hammer function must be OFF)
Overall Length 4.5 in.
Product Weight 0.82 lb
Material Stainless Steel / Composite
Compatible Bits Straight Shank (Round/Hex)
Package Height 7.75 in.
Package Width 4.25 in.

Pro-Tip: Always double-check your rotary hammer settings before use. This adapter is rated for ROTARY ONLY mode. Engaging the "Hammer" or "Hammer Drill" mode while this chuck is attached can damage the adapter's internal mechanism and cause the drill bit to loosen or fall out during operation.