Helical insert W.TEC^® INSERT COIL Free Running

Name: Helical insert W.TEC ® INSERT COIL Free Running
Brand: Würth
SKU: 46277 21

Wire thread insert FR A2 W.TEC series
HELCINRT-FR-A2-M7X21
W.TEC

Art.-no. 46277 21

EAN 4045727168158

All versions

Specification

For producing a lasting, heavy-duty female thread. With free running, true to gauge thread. Made of A2 stainless steel

Perfect combination of space-spacing and wear-resistant thread strength

Optimal force distribution

Flexibility of the thread inserts compensates for pitch and angle errors

Thread insert sits securely

Minimised thread friction torque and minimised torsional stress

Increased corrosion resistance

Space and weight minimisation

Smaller number of required connection points and/or reduced screwing dimensions

Costs minimised

By reinforcing the thread, which effectively minimises the repair costs

Proof of Performance

The tolerance position of the ISO thread corresponds to 6H following installation.

Instructions

A resistant thread in 4 steps:

Step 1:

Drill a core hole or drill out the damaged thread

Step 2:

Create a receiving thread

Without cutting using thread moulding for an even more resilient receiving thread

Step 3:

Set the thread insert

The helical insert can be mounted both mechanically and also by hand using the corresponding screw-in tool.

Step 4:

Break the pin

Separate the follower pin by tapping gently on the predetermined break point with a pin breaker, and then remove. Automatic pin breakers are also available for series production.


Material	Stainless steel A2
Surface	Plain
Design	Free running
Thread type x nominal diameter	M7
Length built-in state (l₁)	21 mm
Outer diameter (d₁)	8.4 mm
Thread form	Standard metric thread
Pitch	1 mm
Core hole diameter	7.3 mm
Min. core hole depth	25.5 mm
Required thread depth at stud hole	24.5 mm