Jacobs 3/8 Inch Chuck With 0.04 to 0.375 Inch Capacity Medium Duty Plain Bearing Keyed Chuck 1/2 Inch 20 Threaded Mount Center Ground Jaws For Absolute Straightness Through Hardened Sleeve Teeth Hardened Nose And Keyholes Built For Heavy Duty Jobs

3/8 in Chuck with 0.04-0.375 in Capacity, Heavy-Duty
✔️ Plain bearing design with through-hardened teeth, 1/2-20 mount, TIR.004

This heavy-duty chuck is built for portable, bench, or floor drills and bases. It delivers precise gripping and long wear life in metalworking, drilling, and milling tasks common in shops and production lines.

✅ 0.04-0.375 in (1.0-10.0 mm) capacity
✅ 1/2-20 threaded mount
✅ Center-ground jaws for absolute straightness
✅ Through-hardened sleeve teeth with hardened nose and keyholes
✅ 100% inspected for performance and precision

💡 What is a heavy-duty plain bearing chuck used for in metalworking applications? This handy tool helps keep drill bits aligned and secure for accurate work.
High-precision gripping
Through-hardened components
1/2-20 threaded mount compatibility
Aligns jaws for straight drilling

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