304SS DIN8140 Thread Inserts Free Running Enhanced Thread Connection Strength

Introduction

Wire thread insert is a new internal threaded fastener for threaded connection, and screwed into a threaded hole in the fastening member are connected in one, formed in standard thread, bolts (or screws) and then screwed wherein Also known as threaded wire sleeve, wire sleeve for short. It is a spring-like internal and external thread concentric body precisely processed with high-strength, high-precision, and smooth-surface cold-rolled diamond-shaped stainless steel wire. It is mainly used to enhance and protect the internal thread of low-strength materials. The principle is to form an elastic connection between the screw and the thread in the base, eliminate thread manufacturing errors, and improve the connection strength. Wire thread inserts are embedded in threaded holes of low-strength engineering materials such as aluminum, magnesium alloy, cast iron, glass steel, plastics, etc., and can form high-precision internal threads that meet international standards. They have high connection strength, earthquake resistance, impact resistance and wear resistance. Function, and can disperse stress to protect the base thread, greatly extend the service life of the base, and is widely used in electronic applications.

Specification

Installation steps

1. Drilling
According to different specifications, choose the corresponding standard drill bit to drill. The depth of the hole is greater than or equal to the installation depth of the wire thread insert; be careful not to drill the hole into a cone, and the chips do not fall into it. After drilling, the counterbore should not exceed 0.4 pitch depth, because too large counterbore is not conducive to screwing in the wire thread insert.

2. Tapping
Use special taps for wire thread inserts marked with the specified thread specifications for tapping. The length of the tapping must exceed the length of the wire thread insert. For through holes, all taps must be tapped; the accuracy of the tapping determines the tolerance zone of the final standard internal screw hole. The user should choose the tapping method and lubrication appropriately, and the blind hole tapping should be applied with appropriate force to prevent the tap from breaking. After tapping, the threaded holes should be cleaned. Generally, a compressed air spray gun should be used. For blind holes, a long spray gun with radial holes should be used to clean from bottom to top. The threaded holes can also be cleaned by cleaning. When the precision of the threaded hole is high, use a special wire thread insert bottom hole plug gauge for inspection.

3. Installation
Under normal circumstances, the manual installer is used to install the wire thread insert. Put the wire thread insert into the installation tool, insert the mounting handle into the guide rod groove and turn the handle of the installation tool to screw the wire thread insert into the screw hole, and leave 0.25-0.75 circles of empty thread away from the surface. When installing a small amount of wire thread inserts and when installing coarse thread thread inserts above M14×2, you can use "T" type slotting or threaded head simple tools to install, and be careful not to apply a large axial force on the wire thread insert mounting handle To prevent "random deduction". After the wire thread insert is installed, in order to check the accuracy grade of the formed standard internal threaded hole, the corresponding grade plug gauge can be used for inspection.

4. Remove the handle
For wire threaded sleeves with broken grooves, the mounting handle should be removed after screwing into the screw hole, and a handle removal tool is required. In the case of through holes, the wire thread insert mounting handle should be broken. Generally, use a punch to align the mounting handle and use a hammer of about 200g to remove it. For coarse thread wire thread inserts above M18×2.5 and M14×1.25 The above fine-tooth steel wire thread inserts can be broken by bending the mounting handle up and down with needle-nose pliers. Then remove the broken mounting handle from the screw hole.
Note: If you use an automatic breaker, you only need to use the punch of the automatic breaker to press the wire thread sleeve installed in the bottom hole with appropriate force to break the installation handle.

5. Disassembly
Extend the tip of the remover into the hole of the wire sleeve, press the handle firmly, and turn it counterclockwise to remove the wire sleeve.

Xinxiang Flight Fastener Co., Ltd. is a professional manufacturer engaged in the design and manufacture of Thread Inserts, Self-Tapping thread inserts and other threaded fasteners. National high-tech enterprises. The company has independent technology development strength, advanced design level, automatic production equipment and high-precision detection equipment. Professional to provide customers with Thread Inserts, Self-Tapping thread inserts and other threaded fastener product design and use of the whole process of technical support. The company has passed ISO9001:2015 quality system certification. "AVIC-FLIGHT" brand was awarded the certificate of "famous brand in China" by China product quality evaluation center. The company has obtained more than 15 utility model patents and 12 software copyrights.

The company has more than 70 sets of processing equipment, mainly automatic equipment. The products are widely used in communication base station cooling device, automobile power transmission system, aerospace, aircraft, ship, wind power transmission system, national power grid transmission equipment, communication electronic equipment, medical equipment, heavy engineering machinery equipment, semiconductor high-end equipment and other fields.

The company can produce Thread Inserts products that meet the corresponding standards according to customer requirements. It can be produced according to MS21209, DIN8140, N926, ITN32760, MO-44421 and other standards.

The company's Thread Inserts cover Free running and Screw lock thread specifications in metric and English systems.Thread Inserts can be plated with Cd, Ag, Zn, Sn, green, red, blue and dry film lubrication. Self-Tapping inserts cover 302 / 303 and 307 / 308 thread specifications in metric and English systems. The materials are stainless steel 1.4305 (303), stainless steel 1.4301 (304), stainless steel 1.4401 (316), brass. Case hardened steel, zinc plated yellow chromed or zinc plated blue passaged.The company can produce 60 million pieces of inserts with various specifications every year, and provide all kinds of auxiliary tools.

Integrity management, scientific and technological innovation, and customers grow together to create brilliant.