Description
Securely mount round shank tooling with the Magnum Boring Bar Holder 3/8″, designed to stabilize machining operations in metalworking lathes. This holder accommodates standard round shanks, ensuring rigid setups and minimizing chatter during precision boring passes. The MAG-HBB38 integrates easily into standard tool posts, providing reliable performance for demanding shop environments.
Features
- Compatible Profile – Secures standard 3/8″ round shank boring bars.
- Rigid Setup – Minimizes tool deflection during internal turning.
Specifications
- Capacity: 3/8″ Round Shank
- Length: 2 1/4″ (57.15 mm)
- Profile: 1/2″ (12.7 mm) Square
- Supplier Part Number: 375-BH38
- KMS Product Code: MAG-HBB38
Compatibility
This holder is designed for standard 3/8″ round shanks. It is directly compatible with the Magnum 9-Piece Boring Bar Set (MAG-BB3/8), as well as individual Magnum Boring Bars (MAG-BB382) and Magnum Boring Bars (MAG-BB38318).
Common Shop Applications
- Enlarging internal diameters on pre-drilled metal workpieces.
- Cutting internal profiles and step bores on a metal lathe.
Recommended Shop Add-Ons
- Magnum Cutting Fluid
- Magnum Safety Glasses
Frequently Asked Questions
Q: Will this holder fit a standard quick-change tool post? A: Yes, the 1/2″ square profile is designed to easily mount into standard lathe tool posts and quick-change holders.
Q: Does this holder include the boring bars? A: No, this is the holder block only. The boring bars must be purchased separately.









