[Company Introduction] 

*Vision

Since its establishment in Feb. 2002, Viblock Co., Ltd. has aimed to achieve two slogans: "a company that considers the safety of the people first" and "a company that considers the interests and trust of customers first". We supply the best quality anti-loosening fasteners (bolts, nuts), Section Insulator, and Railway Electrification products in Korea.

With the spirit of creativity and challenge, we are committed to producing the best products in the world, contributing to the productivity improvement of the industrial field and the safety of people. We have made every effort to be your beloved and trusted company.

We are specialized in fixing parts related to anti-loosening in vibration such as J.lanfranco anti-loosening nuts, hybrid anti-loosening nuts, anti-loosening bolts, Nord-¬lock anti-loosening washers, whirl washers, special bolts and nuts. From 2013, we have been supplying products such as Section Insulator, Phase Break, ASNS and Gold Detection through R&D agreement with Arthur Flury. Since 2015, we have been supplying stably Disconnector, Load Break Switch and Motor Drive from Rauscher Stoecklin.

[Company History] 

2012. Established Sejong Hitech Co., Ltd. 

2012. Acquired patent for heat sink LED lighting 

2013. Acquired high efficiency equipment certification for LED floodlight 

2013. Certified as Venture Business (Technology Guarantee Fund) 

2014. Registered electric lighting equipment manufacturing factory 

2014. Proofed for direct production of LED lighting device 

2014. Registered design of LED ceiling lights 

2014. Acquired ISO 9001 Quality Management System Certification 

2014. Acquired patent for DC current ripple reduction for LED lighting 

2014. Acquired high efficiency equipment certification for LED floodlight 

2015. Acquired environmental label certification for reduction of harmful substances,   

          energy, and waste 

2016. Joined Trade Association 

2016. Acquired TISI Thailand industry standard certification 

2017. Acquired ISO14001 environmental management system certification 

[Product Description] 

Uses and applications: The prevention of bolt loosening must be adopted because it affects the public transportations such as air transportation, railroad, passenger ship, bus and national plant industry such as hydropower, nuclear power and tidal power, as well as people’s life. However, due to lack of means of publicity and safety insufficiency, it has not been spread so far.

*Introduction

The above product is a product which can tightly hold the thread of the bolt when it is connected with the slots on both sides at the upper part of the nut. It can not be solved by any vibration.

[Product Features]

Product name : ESL NUT

Size : STEEL (M2 ~ M60), SUS (M2 to M60), All inch sizes

Temperature : STEEL: -50 ℃ ~ 300 ℃

SUS : -200 ° C to 400 ° C

* Features

- Dual-slot (bi-directional slot) at the top of the nut to generate tension to prevent loosening

- Reusable

- Complete product verified by 4 season field test

Specifications: NFE 25 411, SNCF ST 001-002 FPn6