Suppliers of quality commercial grade fasteners since 1946. We are a fourth-generation family-operated business, and our reputation has been built on convenience, customer satisfaction and reliability. Keystone can get the parts you need, handle your secondary processing needs, and to your door with on time shipping and delivery.
KARAMTARA ENGINEERING PVT. LTD
Karamtara Engineering, which is among the leading transmission line steel lattice towers suppliers globally that has undertaken and delivered many key projects around the world and North America. We also produce fasteners and roll our steel in our rolling mill.
Kao Wein Precision
Kao Wein Precision Co., Ltd was established in 2007. We focus on the integration, utilization and requirement in the Bonded Washer field. We have acquired the ability to manufacture different kinds of Bonded Washers. Furthermore, we intend to be the supplier who can provide customers to make their products better. To achieve this goal, we have ISO9001 International Quality Certification in 2008 and has completed the ISO 14064-1:2018 greenhouse gas verification in 2025, we keep investing on our products research and fasteners appliction development, improving our products qualities, enhancing our employee training, and strengthening our cooperation and communication with customers. We believe our efforts will make us move forward to challenge the global market. Your inquiries, questions and designs are welcome. We sincerely hope you will keep supporting us and helping us to meet the best of your expectations. We are here to provide you with sincere service.
Jordahl USA, Inc.
JORDAHL connects: steel, concrete, heavy loads, and a whole lot more. Many customers around the world have already decided on high-quality products for fastening, reinforcement, shear connections, framing, and faade connection systems. Customers who choose JORDAHL want more higher quality, broader choice, better consulting services, wider experience. They get all of this from JORDAHL. Since our company was founded in Germany in 1907, we have been at the forefront of connection and shear reinforcement system development. JORDAHL products, such as anchor channels, have become milestones in the evolution of structural engineering and have brought lasting changes to construction, shaping the way buildings are designed and making them safer, around the world.