Shortening construction period and reducing construction costs: 2-piece set bolt 'D-LOCK'
Achieved a significant improvement in work speed compared to the conventional 5-piece structure! For the installation of architectural structures and the mounting of solar panel frames!
The "D-LOCK" is a newly conceived set bolt designed with a simple two-piece structure, incorporating functional components, considering workability on-site. With fewer parts, it is easy to handle and speeds up installation, making it easier to work even in limited spaces, while reducing the risk of dropping or losing components. It contributes to improved safety on-site and reduced construction costs. 【Features】 ■ Workable two-piece structure Compared to the conventional five-piece (B, N, Wx2, SW), the D-Lock adopts a two-piece structure. ■ Anti-rebound function and high workability The D-Lock employs a disc spring as an anti-rebound feature. ■ Bolts and nuts are domestically produced (including in-house production, except for some nuts) ■ Supports traceability through lot management We will provide inspection reports for the set products. ■ Utility model (No. 3230995), technical evaluation obtained ■ Various product variations responding to customer requests ◎ For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Product Specifications】 ■Strength Classification: 4.8 (Nut Strength Classification 5T) ■Surface Treatment: Zinc Plating (Electrogalvanized) for sizes M12 to M20 Hot-Dip Galvanized Tin Alloy (KSG) Plating for sizes M6 to M20 ■Sizes: M6, M8, M10, M12, M16, M20 (Please refer to the size chart in the image section for details) *As of August 1, 2022, the quantity per size has been changed for some sizes. 【Variations】 ■Stainless Steel Products (Available in some sizes, please refer to the size chart in the image section) ■Bag Nut for D-LOCK (M10 size only) ■W-LOCK (SW Mounted Type) ◆Strength Classification 6.8 D-LOCK (Higher strength than usual) ◆TONEJI SUPER COAT (D-Lock with higher corrosion resistance than usual) *For products marked with ◆, dedicated product pages are available. Please take a look. *If you have requests regarding size, material, etc., please feel free to consult with us. *Orders for nuts only without sets are also accepted. *For more details, please do not hesitate to contact us.
Price range
Delivery Time
※The delivery time may vary depending on the quantity, so please feel free to contact us.
Applications/Examples of results
【Applications】 ■ Bolt connections for building rafters and battens, and relatively minor structures ■ Construction machinery, industrial machinery, environmental equipment, etc. ■ Panel and frame connections for solar power plants ■ Joining work in narrow spaces such as piping ■ Bolt connections for stair handrails Additionally, it can be used in many bolt connection points where hexagon bolts were previously used.
Line up（6）
| Model number | overview |
|---|---|
| M6 | Neck length 20, 25mm |
| M8 | Neck length 20 to 35mm (every 5mm) |
| M10 | Neck length 25 to 40mm (every 5mm) |
| M12 | Neck length 30, 35, 40, 45, 50 to 190mm (every 10mm) |
| M16 | Neck length 35, 40, 45, 50, 55, 60 to 190mm (every 10mm) |
| M20 | Neck length 50, 60mm |
catalog（1）
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Company information
TONEJI Co., Ltd. not only provides traditional fastener products such as bolts, nuts, and washers, but also aims to meet various customer needs in a diversifying society by assisting in the development and design of metal parts and offering value-added proposals for better product creation. Currently, we mainly manufacture and sell products under our unique brands such as D-Lock, HugBolt, and T-LSB. We also engage in the production of custom-made products and contract testing. Under the philosophy of "creating work that contributes to society," we are committed to supplying safer, more convenient, and stable quality products with our new company name and structure.