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Helical insert W.TEC® INSERT COIL Free Running

Wire thread insert FR A2 W.TEC series
HELCINRT-FR-A2-M3X7,5
W.TEC

Art.-no. 46273 75
EAN 4046777804980
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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


  • In low-strength metal materials

  • In plastics


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.

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

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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


  • By cutting using screw tap


OR


  • 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

M3

Length built-in state (l1)

7.5 mm

Outer diameter (d1)

3.6 mm

Thread form

Standard metric thread

Pitch

0.5 mm

Core hole diameter

3.2 mm

Min. core hole depth

9.75 mm

Required thread depth at stud hole

9.25 mm

Determining the nominal length (reference values)
Material strength of workpiece Rm in N/mm²Nominal lengths for thread inserts depending on the strength class of the screw or the yield strength of the screw material in N/mm²
5.8/4008.8/64010.9/90012.9/1080
up to 1502 d2.5 d2.5 d2.5 d
Over 150 up to 2001.5 d2 d2 d2.5 d
Over 200 up to 250 1.5 d1.5 d2 d2.5 d
Over 250 up to 3001 d1.5 d1.5 d2 d
Over 300 up to 4001 d1 d1.5 d1.5 d
Over 4001 d1 d1.5 d1.5 d
Thread inserts with a nominal length that corresponds to the material strength of the workpiece and the strength class of the screw (in accordance with the table) achieve the minimum breaking force of the screw as per ISO 898-1
Required accessory:
 
Product
Description
Quantity
PU
Price
/PU

TAP-HELCINRT-GRND/THRGHO-HSSG-M3X0,5

For blind holes and through holes
x 1 pcs
The packaging unit defines the number of articles in one packaging. In the catalog segment you can choose from different packaging units if a pop-up menu is displayed.

Just leave the field empty if you don't know the packaging unit when directly entering the article number in the shopping basket or when importing with Easy-/VarioScan. The packaging unit will be determined automatically.
The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
VVVVAAABBB
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
VVVVAAABBB
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:
VVVVAAABBB
04076
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Price for 100 units
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