Hana Lock - Patented Bolt, Nut Loosening Prevention Lock-Washer

ABOUT HANAGIGUN

Hana-Lock Washer & Nut
set a new standard for safety and quality

Operating equipment in modern industrial environments presents numerous challenges. Flanges at the ends of pipelines are particularly susceptible to bolt and nut loosening caused by mechanical vibrations from motors or pumps, as well as pulsations of fluids within the pipes. This can lead to leakage, resulting in expensive equipment damage, significant financial losses, and catastrophic accidents involving the release of chemicals or hazardous substances. Preventing bolt and nut loosening has therefore become a critical requirement for safety and efficiency across all industries.

For decades, companies worldwide have attempted various methods to address this issue, but a definitive solution has remained elusive—until now.

Hanagigeon Co., Ltd. has successfully resolved these challenges with the groundbreaking HANA-LOCK WASHER & NUT, a globally patented innovation. This high-quality product surpasses the limitations of conventional solutions and is versatile enough for application in industrial sites both domestically and internationally. Offering superior performance and unmatched cost-effectiveness, it outshines expensive imported alternatives, setting a new standard for safety and reliability in industrial operations.

Welcome to Our Website

Factories and industrial sites are composed of numerous types of equipment and machinery.

Flanges, machines, and various equipment connected by bolts and nuts are subjected to prolonged use, during which vibrations from motors or pumps, as well as the pulsation of fluids or gases inside pipelines, can weaken the fastening of bolts and nuts.

As a result, leakage can occur, potentially leading to costly equipment damage and hazardous leaks of chemicals or dangerous substances, which may cause serious safety accidents. Therefore, reliable bolt and nut loosening prevention is essential. Despite the efforts of many companies, both domestic and international, to develop anti-loosening products over the years, a definitive solution has yet to be fully achieved.

In response, Hanagigun has dedicated itself to addressing the issue of bolt and nut loosening in the field by developing the HANA LOCK WASHER and HANA LOCK NUT.

These high-quality products fundamentally address the shortcomings of existing domestic and international solutions. They can be applied in various industries, including marine, oil refining, chemical, gas, and aerospace sectors. Moreover, they offer superior quality at more affordable prices compared to expensive imported products, eliminating the need for dependency on foreign alternatives.

Hanagigun is committed to creating safer workplaces free from accidents caused by bolt and nut loosening, and we will continue striving toward this goal.

2024
• Patent registration for HANA Lock Nut (domestic and international)
• Designated as a Promising Small and Medium Enterprise in Gyeonggi Province
• Registered as a partner with Sebang TEC Co., Ltd. and KCENC Co., Ltd.
• Approved and registered as a supplier of HANA Lock Washer to Samsung Electronics (supplying to Pyeongtaek, Giheung, and Cheonan Samsung sites)
• Supplier for Korea Railroad Corporation (Korail), Urban Development Corporations, and Yeosu Water Resources Corporation
• Supplier for Busan Environmental Corporation

2023
• Awarded the Commendation by the President of the Gyeonggi Institute of Science & Technology Promotion
• U.S. Patent registration
• Registered with the Public Procurement Service’s Innovation Marketplace
• Supplier to the Ministry of National Defense (Navy Headquarters)
• Supplier to Seoul Metro

2022
• Patent registrations in China and Japan
• Selected for the Pilot Purchase Program for Technology-Developed Products by the Small Business Distribution Center
• Awarded the Commendation by the Chairman of Gyeonggi Credit Guarantee Foundation

2020
• Patent registration for the new product HANA Lock Washer
• Registered as a member of the Korea International Trade Association (KITA)
• Expanded and relocated the headquarters and factory
• Established an in-house corporate research center
• Implemented a Smart Factory system

2019
• Design and trademark registration
• Certified as a Venture Business Company
• Designated as a dedicated R&D department

2018
• Established Hanagigun Co., Ltd.
• Achieved ISO 9001:2015 Quality Management Certification

HANAGIGUN Co., Ltd.

111-7, Bangchuk-gil, Godeok-myeon, Pyeongtaek-si, Gyeonggi-do, Republic of Korea
Tel) +82 (0)31-618-4262
Fax) +82 (0)31-618-4263
E-mail) hanagg4262@naver.com

TECHNOLOGY | PRODUCT

HANA Lock Washer/Nut Anti-Loosening Mechanism

* Capable of fundamental loosening prevention under any circumstances, including actual torque fastening and site-specific regulated torque fastening.

* Fully addresses and overcomes the shortcomings of existing anti-loosening washers and bolt/nut products from globally recognized brands H and N (Protected by global patents).

* Patent registrations in Korea, Germany, the United States, China, and Japan / Registered design protection in Europe.

① Same as conventional bolt/nut fastening: Hana-Lock Washer is applied on the bolt side, and Hana-Lock Nut is applied on the nut side.

② The wedge-shaped Hana-Lock Washer is stamped between the bolt head and the base material, preventing reverse rotation of the bolt.

③ The internal spring is secured along the axial direction of the threads, ensuring that the Hana-Lock Nut does not displace during reverse rotation, effectively preventing loosening.

Advantages of Hana-Lock Washer & Nut

Prevention of Leak Incidents By perfectly mitigating loosening caused by thermal contraction, expansion, or deformation, it ensures a safe and secure work environment.

Global Application HANA Lock-Washer offers the ideal solution across a wide range of industries, including marine, industrial plants, oil refining, chemicals, gas, and aviation.

Perfect Replacement for Existing Products Delivering superior quality at a more economical cost than high-priced existing products, it enhances economic value while strengthening the self-reliance of domestic industries.

Hana-Lock Washer & Nut Installation Procedure

Hana-Lock Washer|Nut Products

HANA(STP)-Lock Washer

MATERIAL
STS 630

APPLICATIONS
Wedge-Type Multi-Purpose Use (Flanges, Steel Structures, and Others)

STRUCTURE
Composed of Cam Surfaces and Wedges
– Used in pairs (2 pieces per set)

< FEATURES >
• Made of SUS material, suitable for both high-temperature and low-temperature environments, with high strength, chemical resistance, and corrosion resistance.
• Maximizes the stamping effect by increasing the pressure per unit area of the wedge (providing superior wedge performance compared to imported products).
• Ensures anti-loosening even at low fastening torque through effective stamping.
• Offers significantly superior anti-loosening performance compared to existing imported washers from N and H brands.

HANA(CAP)-Lock Washer SUS

MATERIAL
SUS 630: Suitable for high and low-temperature environments, offering high strength, excellent chemical resistance, and superior corrosion resistance.

APPLICATIONS
Wedge-Type Multi-Purpose Use (Flanges, Steel Structures, and Others)

STRUCTURE
Composed of a Cap(Cover) and Base(Wedge-Type Washer)
Circumferential Flange Contact Stopper

< FEATURES >
• Applicable for Flange and Independent Bolt-Nut Fastening
• Loosening Prevention at Tightening Torque: Stamping occurs at 20–30 N·m, ensuring a strong anti-loosening effect.
• Triple Loosening Prevention Mechanism: Achieved through the combination of wedge-type washer, stopper, and cap (cover) fastening.