Anti-Loosening Bolt 'PLBv2' for Severe Vibration Registered in MLIT's NETIS System

The anti-loosening bolt 'PLBv2', designed for severe vibration and one-step tightening, has been registered in the New Technology Information System 'NETIS' operated by Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT).

Anti-Loosening Double-Nut Fastener 'PLB v2'

NETIS Registration Number: HK-260004-A

Ministry of Land, Infrastructure, Transport and Tourism (MLIT) – NETIS Registration Number: HK-260004-A

Nissey Corporation (Headquarters: 2022 Torisawa, Tomihamacho, Otsuki City, Yamanashi Prefecture; President & Chairman: Toshinaka Shimbutsu) announces that its anti-loosening double-nut fastener 'PLB v2' has been registered in NETIS, MLIT's New Technology Information System, effective May 29, 2026.

・About NETIS

NETIS is a database operated by MLIT to share and provide information on new technologies developed by private companies and other entities, promoting the adoption of innovative technologies in public works.

・NETIS Registration Details

New Technology Name: Anti-Loosening Double-Nut Fastener 'PLB v2'

NETIS Registration Number: HK-260004-A

Registration Page: https://www.netis.mlit.go.jp/netis/pubsearch/details?regNo=HK-260004%20

・Exhibition at the Plant Show with 'PLB v2'

Event Dates: July 15 (Wed) – 17 (Fri), 2026

Venue: Tokyo Big Sight, East Hall 2, Booth No. 2-A04

Features of PLBv2

The primary feature of 'PLBv2' is its anti-loosening structure.

・'PLB v2' features two different thread pitches (coarse and fine) on a single bolt, paired with a corresponding double-nut fastening system.

・While most anti-loosening products rely on unstable friction resistance, 'PLB v2' prevents loosening through mechanical interference without depending on friction, delivering stable and reliable performance.

・In tests compliant with ISO16130, 'PLBv2' achieved the highest rating of 'Excellent Anti-Loosening Effect', outperforming other leading anti-loosening products in comparative evaluations.

Another key feature of 'PLBv2' is its excellent workability.

Standard Tools: Electric tools can be used, enabling high operational efficiency.

Installation: Tightening the outer nut simultaneously drives the inner nut, allowing one-step fastening.

・Despite being a double-nut system, there is no need for the reverse-tightening procedure typically required in conventional double-nut applications.

Removal: Loosening the outer nut easily releases the inner nut.

Licensing of Bolt Manufacturing Technology and Intellectual Property, Including Dies

・We offer licensing rights for the manufacture of 'PLBv2' along with the production dies.

・If you have a thread rolling machine, you can manufacture and sell 'PLBv2' using our tools (flat dies, round dies, segment dies) on your existing equipment.

・The manufacturing process requires the same number of steps as standard rolled threads.

・Technical support and guidance are also provided.

・For items experiencing loosening issues, we can provide paid samples for implementation testing.

Company Overview

・Name: Nissey Corporation

・Founded: March 1939

・Headquarters: 2022 Torisawa, Tomihamacho, Otsuki City, Yamanashi Prefecture

・Official Website URL: https://www.nisseiweb.co.jp

・Business Activities: Manufacturing and sales of machine tools (thread rolling machines), components, tools, and automatic feeders

Inquiries

・Nissey Corporation

・Thread Rolling Research Institute [Contact]: Fukayama, Nara

[TEL] 0554-26-5311 [FAX] 0554-26-5312

[E-mail] s_fukayama@nisseiweb.co.jp, n_nara@nisseiweb.co.jp