ER40 Spring Collet Nine Sixteenths Inch High Grade Tool Steel Hardened And Precision Ground For Milling And Lathe Spindles Meets Or Exceeds Federal Specifications Range.551 To.590

ER40 9/16 inch Spring Collet: High-Grade Tool Steel
✔️ Range 0.551-0.590, major diameter 1.620 inches, length 1.810 inches

ER40 9/16 inch spring collet is a precision toolholding component used in milling machines and turning lathes to securely grip tooling during machining.

✅ Material: high grade tool steel
✅ Hardened and precision ground for accuracy
✅ Range: 0.551-0.590, accepts ER-40 9/16 inch tooling
✅ Major diameter 1.620 inches, overall length 1.810 inches
✅ Must be seated in collet chuck nut before use

💡 What is a spring collet used for in milling and lathe work, and how does ER-40 fit into a 9/16 tooling setup?

A handy, concise explanation to help buyers understand its role in common setups. - Keeps tooling centered and secured in the spindle - ER-40 compatibility with 9/16 inch tooling range 0.551-0.590 - Improves grip stability and reduces runout during machining ✝️