ER-20 Collet Nut Set, 10-Piece for Precise Spindle Fit
M25x1.5 threaded, balanced to G2.5 at 25k RPM, alloy steel

These ER-20 collet nut sets are high-precision components built to fit ER-20 collet chucks. Made from premium alloy steel, they deliver tight clamping and low runout even at high spindle speeds. Individually packaged in solid packaging; 10 pcs per order for stable spindle performance.

Fits ER-20 Collet Chucks for broad compatibility
M25x1.5 threaded interface for standard tooling
Balanced to G2.5 at 25,000 RPM to minimize runout
Premium alloy steel for durability and long life
10 pieces per order, individually packaged for stable spindle performance

What is a collet nut used for in CNC milling setups? Its a handy piece that tightens the collet to grip tooling and keep it true during high-speed runs.- clamps the tool securely to maintain concentricity- reduces runout with balanced mating parts- supports quick, secure tool changes- works with ER-20 collet chucks for common sizes