Grade 10.9 heavy twist off type tension control bolt and nut
Other Name: twist off bolts, torsional shear bolts, structural bolts
Standard: ASTM A325, ASTM A490
Dimensions Specification: M16-M27 Or custom
Material :high-carbon steel
Surface treatment: Galvanized, hot-dip galvanized, black oxidized
What is a tension control bolt?
Tension control bolts, also known as tc bolts, are high-strength fasteners that need to be used with 2H hex nuts and F436 washers.
The strength grade is usually 10.9, 10.9 S. For the assembly of steel structures, it needs to be installed with a special torque wrench.
Our Company Advantage
T&Y Hardware Industry Co., Ltd is a professional tension control bolt manufacturer, We not only supply bolts, but also various screws, nuts, washers, threaded rods, stamping parts and other fasteners. In our store, you can buy all the products you need in one stop.
So far, our company has been operating steadily for 22 years. During this long period of time, we have not only accumulated customer resources from all over the world, but also established deep friendship with them and become mutually trusted partners.
Whenever we go to a country to participate in an exhibition, we will take this opportunity to visit local customers to deepen the understanding and cooperation between the two parties. At the same time, we also sincerely invite you to visit and exchange our company and discuss future cooperation opportunities together.
International exhibitions over the years

The International Fastener Exp was held in October at the Mandalay Bay Convention Center in Las Vegas, USA. This is one of the largest and most important fastener exhibitions in North America, and we are honored to have participated. In the future, we will participate in more exhibitions to let more friends know us.

In May 2022, we participated in the Hanover Industrial Exhibition in Germany, which was quite successful. We also met old customers here and made many new friends.

In 2022, we participated in the Atlanta Machinery Show in the United States
Various parameters of tension control bolt
- Customer feedback
- Our various certificates
- Grade
- Tension control bolt Thread

Grade (ASTM): A325 A490 8.8 10.9 12.9
UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Related Product
Every process will be checked by our quality inspection department which insures every product’s quality. In the production of products, we will personally go to the factory to check the quality of products.
We usually keep stock for standard items ,If not special items , No MOQ required
For the T&Y hardware industry, standard samples are free charge ,for new customers ,we required to pay for freight ,and charge will return after order confirm.
30% value of T/T in advance and other 70% balance on B/L copy.
For small order less than 1000USD, would suggest you pay 100% in advance to reduce the bank charges.
For Standard carbon steel tension control bolt ,we will ship in one month ,For stainless steel twist off bolts ,we will ship in 7-10 days, Special items per required













