Hebei Wotu Fastener Manufacturing Co., Ltd., founded in the 1990s, is located in Yongnian District, Handan City, Hebei Province, known as the “Hometown of Fasteners.”
1. Core Hardness: Standard: HRC32-40. Our products are measured at HRC31.7-39.0.
2. Surface Hardness: Standard: HV600-700. Our products are measured at approximately HV620.
3. Hardened Layer: 4#-6#: 0.05-0.18mm; 8#-12#: 0.10-0.23mm; 14#: 0.15-0.28mm.
4. Torque: Specifications, self-drilling screw, bolt.
Hebei Wotu Fastener Manufacturing Co., Ltd., founded in the 1990s, is located in Yongnian District, Handan City, Hebei Province, known as the “Hometown of Fasteners.” Our company specializes in producing self-drilling screws, hexagonal self-drilling screws, tower bolts, anti-theft bolts, GB30 bolts, anti-theft nuts, foot bolts, U-bolts, electrified railway bolts, nuts, bolt pins, and various electrical fittings. We stock various hot-dip galvanized bolts, nuts, flat washers, and spring washers, and can customize various non-standard parts. We can also help customers arrange sourcing and shipping. Our factory can undertake various external processing and heat treatment work, including hot-dip galvanizing and electro-galvanizing, as well as surface treatment work such as phosphating, drawing, annealing, and tempering. We are serious about self-drilling screws, hot-dip galvanized bolts, and our products. If you have any needs, please feel free to contact us!
Fixed anchor bolts, also known as short anchor bolts, are cast in with the foundation and used to secure equipment that does not experience strong vibration or impact. 1. Fixed anchor bolts, also known as short anchor bolts, are cast in with the foundation and used to secure equipment that does not experience strong vibration […]
A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually tighten objects and machine parts. A self-drilling screw is a screw with a self-tapping drill bit at its tip. Screws are a common invention of humankind throughout history, and in terms of application, they […]
