ER-40 7/16″ COOLANT SPRING COLLET (3900-5781)

ER-40 7/16″ COOLANT SPRING COLLET (3900-5781) (SKU: 3900-5781)

ER-40 7/16″ Coolant Spring Collet (3900-5781)

• Designed for use with cylindrical shank tools, not flats
• Cutting tool should be inserted the full length of the collet. If these conditions are not met, coolant leakage may result
• Runout is <= .0005"
• Meets DIN 6499B
• Collapse Range is .433 to .472″
• D1 Major diameter is 1.620″
• Overall length is 1.810″

Specifications

• Designed for use with cylindrical shank tools, not flats.
• Cutting tool should be inserted the full length of the collet. If these conditions are not met, coolant leakage may result.
• Runout is <= .0005".
• Meets DIN 6499B.
• Collapse Range is .433 to .472″.
• D1 Major diameter is 1.620″.
• Overall length is 1.810″.
• Weight: 0.65
• Dimensions: L 3, W 2, H 1

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.