Notice of Designation for Utilization Promotion Technology for Fiscal Year 2023 - Nord-Lock Washers for Bolt Loosening Prevention

No allowance for loosening, securely maintain axial force! Physically prevent loosening of bolts/nuts.

This catalog introduces the "Nord-Lock Washer," which utilizes wedge-locking technology to prevent bolt loosening "physically" without relying on friction. We offer a lineup that includes the "Nord-Lock X Series Washers," which simultaneously prevent two types of loosening, and the "Nord-Lock SC Washers," designed for high-strength bolts used in construction. Additionally, we provide information on why bolts loosen and feature the Nord-Lock customer magazine. [Contents] - Nord-Lock Washer Product Catalog - Why Do Bolts Loosen? - Nord-Lock Customer Magazine *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements

Washers compatible with high-strength bolts for construction used in steel structures and bridges in Europe!

The product is a Nord-Lock washer specifically designed for high-strength bolts used in construction, easily replaceable with flat washers as specified in EN 14399-6. It is widely used in structural steelwork and bridge construction in many countries where European standards apply, physically preventing bolt loosening caused by vibrations from vehicle traffic and other sources. The chamfer treatment on the inner diameter is applied to both sides of the two-piece set, eliminating the risk of incorrect assembly orientation. 【Features】 ■ Physically prevents rotational loosening in steel structures ■ Product design specialized for HV or HR sets and CE marked ■ Allows for a highly reliable fastening design even with short fastening lengths ■ Provides the same effect regardless of the skill or experience of the operator ■ Usable in a wide temperature range from -50°C to 150°C *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements

Prevent two types of loosening simultaneously! We offer both standard and wide types for the outer diameter!

We would like to introduce the "Nord-Lock X Series Washers" that we handle. This product can prevent both "rotational loosening," which occurs due to reverse rotation, and "non-rotational loosening," which does not involve reverse rotation due to thermal expansion and contraction or surface indentation, all with a single product thanks to its unique product technology. By incorporating a disc spring shape into the wedge-locking technology in the product design, it also prevents the loss of axial force caused by "settling," which inevitably occurs in metal-to-metal fastening, thereby protecting the fastening joint at an even higher level. 【Features】 ■ Simultaneously addresses two types of loosening with a single solution ■ Allows for a highly reliable fastening joint design even with short fastening lengths ■ Stable friction coefficient due to unique technology ■ Work is completed simply by tightening through the bolt axis ■ Leads to significant reductions in workload and time *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without affecting the base material with heat. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for cast prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or varying dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for casting prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly creating sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or variations in dimensions, can be created in a single molding process. This allows for the verification of multiple types in a short period.