We have prepared a stronger type of D-LOCK that achieves high workability with a two-piece structure.
As a variation product of "D-LOCK," we have prepared a product with a strength classification of 6.8, which is higher than the standard strength. Please take advantage of D-LOCK's benefits while utilizing it for applications that have not been possible until now due to strength requirements. 【Features】 ■ Excellent workability with a 2-piece structure Unlike the conventional 5-piece (B, N, Wx2, SW), D-Lock adopts a 2-piece structure. ■ Return prevention function and high workability D-Lock employs a disc spring as a return prevention feature. ■ Bolts and nuts are domestically produced (including in-house production, except for some nuts) ■ Traceability supported by lot management We will provide inspection reports for set products. ■ Utility model (No. 3230995), technical evaluation obtained ■ Various variation products that meet customer requests ◎ For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Product Specifications】 ■Strength Classification: 6.8 (Nut Strength Classification 6T) ■Surface Treatment: Zinc Plating (Electrogalvanized) Hot-Dip Galvanized Tin Alloy (KSG) Plating ■Sizes: M12X30–40, M16X35–50 (For details, please refer to the size table marked with ★ in the image section) *For sizes and surface treatments other than those listed above, please contact us. *The dimensions will be the same as the conventional D-LOCK. *As of August 1, 2022, the quantity for some sizes has been changed. *Orders for nuts only without sets are also accepted. *For more details, please feel free to contact us.
Price range
Delivery Time
※The delivery date 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（2）
| Model number | overview |
|---|---|
| M12 | Neck length 30, 35, 40 |
| M16 | Neck length 35, 40, 45, 50 |
catalog（2）
Download All Catalogs
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.