CMT Single Precision Collet ER20 D=5/16in (8mm), Pro Grade Collet for Accurate Tool Holding, Precision Collet for Mills, Lathes and Routers, Tough Workholding Built for Daily Shop Use

CMT Single Precision Collet ER20 D=5/16in (8mm)
✔️ Single er-20 collet, 5/16" (7.9 mm), 8 mm (0.31"), Long Tool Life

This CMT Precision Collet ER20 D=5/16in (8mm) is a collet for holding tools and workpieces on a mill, lathe or router. Machinists, CNC shops and woodworkers use it to grip end mills, drills and stock accurately. This is a single piece listing.

✅ Brand: CMT
✅ Mfr part number: 184.080.20
✅ Product type: ER-20 Collet
✅ Pack size: Single, 1 piece
✅ Size or length: 5/16" (7.9 mm)
✅ Additional size: 8 mm (0.31")

💡 How do I get the best runout from a collet?

Clean, tight setups give the best accuracy.

• Wipe the collet and nut before every use.
• Tighten with the right wrench to spec.
• Replace worn collets that stop gripping evenly.

Pick up the CMT Precision Collet ER20 D=5/16in (8mm) and keep your jobs moving.