ER-20 5/16″ SPRING COLLET (3900-5186)

ER-20 5/16″ SPRING COLLET (3900-5186) (SKU: 3900-5186)

ER-20 5/16″ Spring Collet

• Range of collet is .275-.316
• Made of high grade tool steel
• Hardened and precision ground
• Meets or exceeds Federal specifications
• Major diameter is .830″
• Overall length is 1.230″
• Collet must be placed into collet chuck nut before inserting into collet chuck

Specifications

• ER-20 5/16″ Spring Collet
• Made of high grade tool steel.
• Hardened and precision ground.
• Meets or exceeds Federal specifications.
• Major diameter is .830″.
• Overall length is 1.230″.
• Collet must be placed into collet chuck nut before inserting into collet chuck.
• Range of collet is .275-.316.
• Weight: 0.2
• Dimensions: L 3, W 1, H 6

Benefits

• Industrial-grade tooling designed for dependable shop performance.
• Supports consistent results when applied with correct setup practices.
• A practical choice for U.S. machine shops and maintenance work.

Recommended use

• Confirm compatibility (size, interface, machine capacity) before ordering.
• Follow safe operating practices and use appropriate PPE.
• Optimize setup rigidity and process parameters for best results.

USA Warehouse Stock — Fast U.S. fulfillment.