Woodruff Keys Set 25 Pieces Steel Carbon 45 Polished Finish Semicircular Key Bits 10Mm Long 3.7Mm Wide 3Mm Thick Ideal For Circular Shafts And Keyways Heavy Duty Pro Grade Machined For Precise Fit

25-Piece Woodruff Keys Set in #45 Carbon Steel
✔️ 25 pcs, length 10mm (0.39"), width 3.7mm (0.146"), thickness 3mm (0.118"), polished

Woodruff keys are semicircular discs that fit into a circular recess in a shaft to lock hubs to rotating parts. They are commonly used in machine tools, small engines, flywheels, and other power transmission assemblies where precise shaft fit matters.

✅ Material: #45 carbon steel with polished finish
✅ Size: length 10mm (0.39"), width 3.7mm (0.146"), thickness 3mm (0.118")
✅ Type: semicircular Woodruff key for circular shafts and keyways
✅ Pack size: 25 pieces per set for multiple machines
✅ Applications: suitable between flywheel and crankshaft in small engines and machine tools
✅ Fit benefits: minimizes keyway play and stress concentrations for reliability

💡 What is a Woodruff key and where is it used in circular shaft keyways?

Woodruff keys are handy for locking hubs to shafts with a precise fit.

- They sit in a semicircular groove on the shaft to transmit torque
- They reduce backlash and improve hub alignment
- Common in flywheels, crankshafts, and precision tooling
- Made from #45 carbon steel with a polished finish for durability ✝️