Carriage bolts have no drive on the head, but the square neck under the head has the function to fix position of the bolt. A carriage bolt is a fastener without drive usually to connect wood and metal, generally used in lock systems and alarm systems.
- 2022 Tomb Sweeping Day Notice
We will close our company for Tomb Sweeping Day from Apr 2 to Apr 5, 2022. Returning to the office on Wednesday Apr 6. Thank you very much for your support and understanding.Read More
- 2022 Holiday Notice of Labor Day.
We will close our company for Labor Day from May 1 to May 2, 2022. Normal business will resume on Tuseday May 3.Read More
- ISO 9001: 2015 Quality Management
We update our ISO 9001:2015 certificate at July 2018.Read More