Helicoil Quality Self Tapping Three Cutting Bores Inserts

Helicoil Quality Self Tapping Three Cutting Bores Inserts are cylindrical metal bushings with internal and external threads and are specially designed to cut their own threads as they are being driven into a drilled hole. They provide permanent wear-resistant threads in a wide range of materials, from tough to tap, high strength steels to brittle plastics.The thread cutting action is performed by the cutting slots on the insert. By tapping its own thread, the self tapping insert eliminates the need for pre-tapped holes.

Short design : Works Standard 307

Long design : Works Standard 308

Features ：

1.Self tapping - no pre-tapping required2.Very high pull-out resistance3.Highly resistant to vibration, can withstand vibration without loosening4.Produces high quality, permanent, wear-resistant threads5.Unlimited thread re-usability6.Protects expensive components from damage7.Easy to install, standard taps can be used8.Wide variety of styles to fit almost every application

Typical Applications ：

1. Automotive

2. Plant and equipment construction

3. Railway supply industry

4. Electro-technics and laboratory techniques

5. Household appliance

6. Medical engineering

Installation materials:

- Cast iron

- Magnesium alloys

- Aluminium and aluminium alloys

- Duroplastics, thermoplastics

(with the exception of rubber-soft thermoplastics < 100 Shore A)

Material & Finish :

-Stainless steel 303, passivated

-Case-hardened steel, zinc-plated, yellow chromated

Other materials, designs and finishes on request ：

-Brass

-Case-hardened steel, zinc-plated, blue passivated

-Case-hardened steel, zinc/nickel plated, transparent passivated

Thread Internal thread A: As per ISO 6H

External thread E : Special thread with flattened thread root, tolerances in accordance with works Standard .

Technical Parameters ：

Dimensions in mm

Manual Insertion Process:

Manual installation with driving tool and tap wrench：

Emergency installation using screw and nut:

The manual insertion is usually carried out using the manual tool via the female thread or in case of the tools using the hexagon socket. You can of course also use power tools for the manual assembly. If doing so, it needs to be ensured that the rotatable sleeve is in the corresponding correct position.

Image 11.1/12.1

Thread the insert, cutting geometry (slit or bore) has to be pointing downward.Attention needs to be paid while doing so that the screw with nut does not face in the direction of the cutting geometry after locking with a counter nut, as the shavings are otherwise not discharged.

Image 11.2/12.2

Screw in the insert until approx. 0.1-0.2 mm underneath the surface of the work piece(during temporary assembly using screw and nut, the insert should be processed until flat). Vertical assembly must be ensured.

Image 11.3/12.3

Loosen the counter nut, otherwise the insert could possibly become unscrewed. Subsequently screw out the screw/screw-in tool.

FQA

Q1: Are you trading company or manufacturer ?

A1: We are manufacturer since 2004 in Shen zhen ,China .

Q2: Do you have stock for items ?

A2: Yes , most of items are in stock for shippment .

Q3: How long is your delivery time?

A3: Generally it is 1day for stock item,10-15 days for custom items or big quantity over 50000 pcs .

Q4: Can you provide samples ? is it free or extra ?

A4: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q5. What about the payment terms?

A5: Generally 100% T/T in advance before shippment or mass production ,and we can also consult according to your requirement.

Q6: What's your advantage?

A6: The competitive prices, fast delivery and high quality. responsible-oriented employees strict tolerance, smooth finish and long- life performance.

Q7: What are your machining equipment?A7: CNC milling machines, CNC turning machines, stamping machines,grinding machines,automatic lathe machines, tapping machines, grinding machines,screw machines, cutting machines and so on.

Q8: How to guarantee the Quality of Industrial Parts?

A8: We have been in fastener field over 19 years with full experience. And there are 5 checks in the whole processing, We have IQC (incoming quality control), IPQCS (in process quality control section), FQC (final quality control) and OQC (out-going quality control) to control each process of industrial parts production.

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