M2-M30 Standard 304 Stainless Steel Repair Metric Wire Threaded Insert

Structure

The wire thread insert is made of high-hardness, corrosion-resistant steel wire with a diamond-shaped cross-section. It is a spring-like concentric body of internal and external threads. The standard internal thread used for fastening parts has a cross-sectional shape that is a combination of two internal and external threads. Wire thread inserts are divided into two types: ordinary type and locking type, each with or without breaking grooves and with breaking grooves.

The locking type is a polygonal locking ring with one or more turns added to the ordinary threaded sleeve. The elasticity of the locking ring has a braking effect on the screw. The locking wire thread insert has all the advantages of the ordinary wire thread insert, does not affect the installation of the screw, and only adds an appropriate torque during installation.

Features

(1) The diameter of the wire thread insert in the free state is slightly larger than the diameter of the screw hole into which it is inserted. When assembling, the wire thread insert is subjected to the torque of a special wrench to make its diameter smaller and enter the threaded hole that has been tapped with a special tap. After being installed, the steel wire threaded sleeve produces a spring expansion effect, making it firmly fixed in the threaded hole, and will never come out with the screw out.

(2) Increase the load-bearing capacity and fatigue strength of the threaded connection: the wire threaded sleeve makes the screw and the internal threaded hole for the installation of the wire threaded sleeve form an elastic connection, thus eliminating the screw moment and tooth form half-angle error between the internal and external threads. The load on each thread is evenly distributed at the specified length, thereby strengthening the internal thread and damping vibration, so the fatigue strength of the threaded connection of the parts can be improved.

Specification notation

1. According to the marking method of domestic production wire thread inserts:

(1) ST (common type) STd (diameter) p (pitch)-nd

(2) ZST (locked type) ZSTd (diameter) p (pitch) -nd

(3) ZGST (high temperature locking type) ZGSTd (diameter) p (pitch) -nd

2. According to the marking method for wire thread inserts produced abroad:

(1) FR (common type) MD (diameter) × P (pitch)-nD (diameter)

(2) SL (locking type) MD (diameter)×P (pitch)-nD (diameter)

Standard notation

D (diameter) × P (pitch) × N or W (number of turns of wire threaded thread in the free state)

Note: Each domestic standard for wire thread inserts has specific regulations on the marking method of wire thread inserts, see each standard for details

Why Choose Us?

1. A factory with more than 20 years' experience in manufacturing of Thread Inserts.
2. Competitive pricing & military quality.
3. Quick replies to quotations and requests for information.
4. Timely deliveries, rich experience in IMP and EXP.
5. Advanced R & D center, more than one thousand types of threaded inserts and tools.
6. Strict quality control system, passed the SGS and ISO9001: 2015.
7. Comprehensive after-sales support and troubleshooting.
8. Famous brands in China .
9. High quality enterprises in the region.

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.