Helical insert W.TEC<SUP>®</SUP> INSERT COIL Free Running - HELCINRT-FR-A2-M4X8

Helical insert W.TEC<SUP>®</SUP> INSERT COIL Free Running - HELCINRT-FR-A2-M4X8 - 1

Helical insert W.TEC<SUP>®</SUP> INSERT COIL Free Running - HELCINRT-FR-A2-M4X8 - 2

Helical insert W.TEC<SUP>®</SUP> INSERT COIL Free Running - HELCINRT-FR-A2-M4X8 - 3

Helical insert W.TEC<SUP>®</SUP> INSERT COIL Free Running - HELCINRT-FR-A2-M4X8 - 4

Helical insert W.TEC^® INSERT COIL Free Running

Name: Helical insert W.TEC ® INSERT COIL Free Running
Brand: Würth
SKU: 46274 8

Wire thread insert FR A2 W.TEC series
HELCINRT-FR-A2-M4X8
W.TEC

Art.-no. 46274 8

EAN 4046777805079

All versions

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Prices for customers after login

Helical insert W.TEC^® INSERT COIL Free Running

Art.-no. 46274 8

Prices for customers after login

Quantity

x 100 pcs

Exclusively for trade customers

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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.

Product information

Würth Catalogue

Datasheets(X)

CAD data (available after login)

Certificates/ Documents

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

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	M4
Length built-in state (l₁)	8 mm
Outer diameter (d₁)	5 mm
Thread form	Standard metric thread
Pitch	0.7 mm
Core hole diameter	4.2 mm
Min. core hole depth	11.15 mm
Required thread depth at stud hole	10.45 mm

Determining the nominal length (reference values)
Material strength of workpiece Rm in N/mm²	Nominal lengths for thread inserts depending on the strength class of the screw or the yield strength of the screw material in N/mm²
	5.8/400	8.8/640	10.9/900	12.9/1080
up to 150	2 d	2.5 d	2.5 d	2.5 d
Over 150 up to 200	1.5 d	2 d	2 d	2.5 d
Over 200 up to 250	1.5 d	1.5 d	2 d	2.5 d
Over 250 up to 300	1 d	1.5 d	1.5 d	2 d
Over 300 up to 400	1 d	1 d	1.5 d	1.5 d
Over 400	1 d	1 d	1.5 d	1.5 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

Price
/PU

Single-cut tap for W.TEC<SUP>®</SUP> INSERT COIL helical inserts - shape D, made of HSS

Single-cut tap for W.TEC® INSERT COIL helical inserts - shape D, made of HSS

TAP-HELCINRT-GRND/THRGHO-HSSG-M4X0,7

Art.-no. 4625000005

For blind holes and through holes

x 1 pcs

Machine tap For W.TEC® INSERT COIL helical inserts - made of HSCo; shape B

TAP-HELCINRT-MT-THRGHO-HSCO-M4X0,7

Art.-no. 4625000059

For through holes

x 1 pcs

Machine tap For W.TEC® INSERT COIL helical inserts - made of HSCo; shape C

TAP-HELCINRT-MT-GRNDHO-HSCO-M4X0,7

Art.-no. 4625000077

For blind holes

x 1 pcs

W-TEC® INSERT COIL — universal screw-in tool

SCRINTL-HELCINRT-PWR/MAN-ST-M4

Art.-no. 4625000122

Tool for screwing in W-TEC® Insert Coil wire thread inserts manually and mechanically

x 1 pcs

Installation power tool For thread inserts

SCRINTL-HELCINRT-MECH-HEX-1/4IN-M4X0,7

Art.-no. 4625000187

Tool for mechanically screwing in thread inserts

x 1 pcs

W-TEC® INSERT COIL — boring tool

EXTRTL-HELCINRT-ST-(M3-M10)

Art.-no. 4625000200

Manual boring tool for wire thread inserts

x 1 pcs

W-TEC® INSERT COIL — tang break-off tool

TANGBREAKTL-(HELCINRT-M4)-ST-100MM

Art.-no. 4625000207

Tool for breaking off drive tangs from wire thread inserts.

x 1 pcs

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