3/8 Inch End Mill Adapter Holder For Bridgeport R8 Shank Milling Cutters With 7/16-20 Drawbar Thread Hardened And Ground For Concentric Precision Bore Ground Shank And Hole Heat Treated For Durability 0.95 Lb

Single 3/8 in end mill adapter for R8 shanks
✔️ 3/8 in (9.525 mm) bore; 7/16-20 drawbar; hardened, precision-ground

This 3/8 inch end mill adapter fits R8 shanks and lets you run small milling cutters on Bridgeport-style machines with precise concentricity. It's built from high quality steel forgings and heat treated for durability, ensuring you get accurate bore and hole alignment during heavy milling tasks.

✅ Bore: 3/8 in (9.525 mm)
✅ Drawbar thread: 7/16-20
✅ Hardened and Ground
✅ Precision ground concentric bore; ground shank and hole; heat treated for double accuracy
✅ Quantity: 1
✅ Weight: 0.95 lbs

💡 What is an end mill adapter used for?

This handy accessory helps mount 3/8 in end mills to machines with R8 shanks. - Handy for mounting 3/8 in end mills to R8 shank machines - Improves concentric accuracy and reduces runout on Bridgeport-style mills - Ideal for setups with 7/16-20 drawbar threads and hardened toolholders - Durable, heat-treated design resists wear during heavy cutting