HELICOIL 3747-6 Prewinder, Steel, M6 x 1 Thread Size

Helicoil 3747-6 prewinder is designed to repair stripped or worn threads and fill holes that have been drilled or tapped in the wrong area.

Features:

• It is suitable for use with free running and screw locking inserts.
• It comes with a metric coarse thread type to prevent seizing during tightening for faster installation.

Frequently Asked Questions:

Q. What are the benefits of coarse threads?

A. Coarse threads tap easily into brittle materials and are less likely to cross thread.

Q. What is this Helicoil 3747-6 prewinder tool made of?

A. Helicoil 3747-6 prewinder tool has steel & plastic construction.

Q. What is a free running insert?

A. The thread of free-running helical inserts is smooth and free-moving. The similar properties of free-flowing helical inserts apply to locking helical inserts but they, additionally, permit frequent removal and reassembly of screws without noticeably losing torque and secure threaded components against vibration or shock loosening.