At HARDLOCK, we innovate safety and reliability through fastening solutions that never fail.
Over 50 years ago, Katsuhiko Wakabayashi (1933–2024) invented the HARDLOCK Nut and went on to found HARDLOCK Industry Co., Ltd.
The idea came to him during a visit to a Shinto shrine, where he noticed a traditional wooden wedge used in the gate structure—a simple, effective method for securely joining parts while remaining easily removable. That moment inspired the wedge concept behind the HARDLOCK Nut and led to a fastening solution trusted around the world.
The wedge concept is what sets the HARDLOCK Nut apart—it applies a preload-independent transverse load to the bolt shaft. This locking effect prevents loosening, no matter the conditions. As a result, HARDLOCK is trusted in applications where safety and reliability cannot be compromised.
Our product lineup includes:
HARDLOCK Nut (HLN) – an all-metal, free-spinning locknut with industry-leading resistance to loosening through its wedge interface
HARDLOCK Bearing Nut (HLB) – an all-metal bearing locknut that uses the same wedge design as the HLN to prevent loosening
HARDLOCK Set Screw (HLS) – an all-metal set screw system derived from the HLN wedge concept, eliminating loosening in the most demanding environments
All products are manufactured in Japan to the highest quality standards.
Company Details
- Employees
- 5
- Founded
- -
- Address
- 1-6-24 Kawamata, Higashi-Osaka,osaka 577-0063,japan
- Industry
- Industrial Machinery Manufacturing
- NAICS
-
Industrial Machinery ManufacturingFood Product Machinery ManufacturingSemiconductor Machinery ManufacturingSawmill, Woodworking, and Paper Machinery ManufacturingPrinting Machinery and Equipment ManufacturingOther Industrial Machinery Manufacturing
- Website
- hardlock.co.jp
- HQ
- Higashi-Osaka, Osaka
Hardlock Industry Questions
Hardlock Industry's website is hardlock.co.jp
Hardlock Industry's LinkedIn profile is https://jp.linkedin.com/company/hardlock
Hardlock Industry has
5 employees.
View email and phone details for 5
employees at Hardlock Industry.
Hardlock Industry's industry is
Industrial Machinery Manufacturing
Hardlock Industry's top competitors are
Rems Fastners,
Delta East Ltd,
Miningsun,
Apl Stainless Steel Fastners - Auto Tools Centre,
Construction Solutions.cn,
Chang Zhou Babel Industrial Co.,ltd,
Kovai Fastners Company,
Charpentes Jugla,
Würth Industry Japan,
Sri Vishnu Fastners.
Hardlock Industry's categories are Industrial Machinery Manufacturing
Hardlock Industry's founding year is 1973
