4-Jaw Self-Centering Lathe Chuck, 96 mm, M33 Thread

4-jaw self-centering lathe chuck delivers stable, repeatable clamping for accurate turning, grinding, and milling. The 96 mm (3.75 in) chuck body is built from hardened 45 steel with a chrome-plated finish for wear resistance in demanding shop use. Adjustable jaws expand your working range for both internal and external gripping, helping you hold round or irregular workpieces with controlled runout for cleaner cuts and more consistent results.

• Delivers reliable centering with controlled runout for precision machining and smoother finishing


• Fits a wide range of workpieces with adjustable 4-jaw clamping for inside or outside grip


• Includes a T-handle wrench interface for quick tightening, loosening, and jaw adjustment


• Supports repeatable setups with hardened 45 steel construction and chrome-plated surface


• Works across lathe, grinding machine, and milling machine tasks for a flexible shop setup

Built for operators who need consistent holding power without complicated setup, this compact chuck installs and removes with basic screws and handles, then clamps or expands by rotating the T-handle. Use it to improve stability on small parts, larger stock, and varied shapes where secure grip matters. Keep it on hand as a dependable workholding upgrade for everyday production or hobby projects—grab yours today and tighten up your accuracy on the next job.

• Chuck outer diameter: 96 mm / 3.75 in


• Overall dimensions: φ96 × 80 mm


• Main material: 45 steel (quenched & hardened)


• Surface finish: chrome-plated natural color, surface roughness ≤ Ra1.6


• Internal clamping range: 32–70 mm (1.26–2.75 in)


• External support range: 45–86 mm (1.77–3.4 in)


• Chuck internal thread: M33 × 3.5 TPI


• Outer diameter runout: ≤ 0.15 mm


• Test ring end face runout: ≤ 0.15 mm


• Test bar radial runout: ≤ 0.40 mm at 50 mm distance


• Bearing tolerance: ≤ 0.3 mm / 0.01 in


• Net weight: 2.2 kg / 4.8 lb