Cutting Bores Self Tapping Bolts

Cutting Bores Self Tapping Bolt is a new type of special fastener for strengthening the strength of screw thread. The product has inner and outer teeth, embedded in soft materials such as plastics, aluminum alloy, cast iron and copper, forming a relatively high strength inner screw hole.Self tapping bolt does not have to attack screw teeth in advance, can be directly into the parent material to form a thread surface, the thread has been broken teeth can maintain the original size, in line with economic principles.

Short design : Works Standard 307

Long design : Works Standard 308

Features ：

1. Self tapping insert has a large effective shearing surface, so ensuring a higher degree of pull-out strength.

2. Self tapping insert is driven subsequently into the finished work piece. This means a higher casting machine output, no rejects due to incorrectly cast-in insert components, no moulding sand trapped in the thread.

3. A pre-cast or pre-drilled retaining hole with normal tolerance requirements is sufficient for driving in the self tapping insert. The thread is always precisely positioned.

4. Self tapping insert is insensitive to small areas of shrinkage. The self tapping insert prevents damage caused by torn threads.

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 15 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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