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MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert

Xinxiang Flight Fasteners Co., Ltd.

MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert

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Brand Name : AVIC-Flight

Model Number : M4

Certification : ISO9001:2015,ROHS

Place of Origin : China

MOQ : 100pcs

Price : Negotiate

Payment Terms : T/T, L/C

Supply Ability : 50000pcs/day

Delivery Time : 15 days

Packaging Details : 1000pcs/bag

Name : Locking type wire thread inserts

standard : DIN8140

material : 304SS

length : 1d-3d

Precision : 6H

colour : Natural color

Purpose : Radiator Or Gearbox

Feature : Prevent Loosening

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Prevent Loosening Thread Inserts Screw Lock MS21209 For Radiator Or Gearbox


Wire thread insert made of high strength, high-precision, smooth surface of the cold-rolled stainless steel rod working diamond formed by the helical coil, a threaded hole embedded low-strength aluminum, magnesium alloy, iron, steel, glass, plastic and other materials of construction of the wire thread insert, The thread can be protected to prevent the screw hole from being damaged by vibration, impact, abrasion, rust and other problems, and greatly extend the service life of the substrate.
"What is the difference between ordinary wire thread inserts and locking wire thread inserts?
A. Ordinary wire thread insert symbol "FR", a multi-turn spiral coils, by selecting a reasonable installation length, formed resilient connection between the screw threads and the base body, thread manufacturing to eliminate errors and improve the connection strength with the conventional liner Compared with the sleeve, the additional volume and weight are reduced.
B. Locking type wire thread inserts, marked "SL", are formed by one or more polygonal non-deformed rings forming a locking edge, which can fasten the assembly screws and prevent loosening, and has all the characteristics of ordinary thread inserts.


The locking wire thread insert is a new variety developed on the original basis of the ordinary wire thread insert. There are 1 to 2 turns of pentagonal or hexagonal shape in the middle of the locking type wire screw sleeve. When the bolt is screwed halfway into the threaded hole, the head of the bolt hits the locking ring. Some other conventional locking devices have superior locking performance and higher strength, and can be disassembled repeatedly.
When the screw is screwed into the screw hole of the locking wire thread insert, it is loose before entering the polygonal locking ring. When the screw enters the polygonal locking ring, the polygon needs to be opened to deform the locking edge. At this time, when the screw is screwed in, the frictional force given to the screw by the locking edge must be overcome. After the screw is tightened, this friction force can prevent the screw from loosening by itself, thus replacing other locking methods.


Material 304H 321 316 Inconel X750
Standard DIN-8140 MS-21209
Model Metric M3 M4 M5 M6 M8 M10 M12 M16
British 6-32 8-32 10-32 1/4-20 1/2-13 5/8-11
Length 1d 1.5d 2d
Accuracy Green Red Golden Blue Non Customized

MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert


1. Quickly and effectively repair damaged threads on a variety of materials.

2. Enhance the thread strength on light materials, such as large and medium-sized non-ferrous metal castings, die castings and ductile ferrous metal base materials, as screw holes that are often screwed in and out.

3. It is especially suitable for use in environments requiring high-strength internal threads, with strong seismic and pull-out resistance. It has higher strength than commonly used wire thread inserts, and is firmly connected to the base body, and will not be separated from the base body even when working under shock or vibration environment.

4. Remedy the wrong hole and avoid reprocessing the wrong part.

MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert

MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert

MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert

Product Tags:

1 2-13 Helicoil Screwlock


MS21209 Helicoil Screwlock


5 8-11 M16 Thread Insert

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MS21209 5/8-11 1/2-13 Helicoil Screwlock M16 Thread Insert Images

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