A Timber Bolt, also known as a dome head bolt, fender head bolt, or economy bolt, is a specialized fastener designed for connecting wood to wood or metal to wood in heavy - duty construction applications. Here is a detailed introduction:
Design Features: It features a wide, low - profile, domed head that provides a large bearing surface, which is crucial for use with soft woods and materials. The underside of the head typically includes fins that prevent the bolt from turning in the timber, while the shank features partial threads with a flat end.
Dimensions and Specifications: Timber bolts are available in various diameters and lengths. Common diameters range from 1/2″ to 1 - 1/2″. For bolts with lengths less than or equal to 6″, the thread length is calculated as (2 x diameter) + 1/4″; for those longer than 6″, it is (2 x diameter) + 1/2″.
Materials and Finishes: Usually, timber bolts are made of ASTM A307 grade A steel. To enhance their corrosion resistance, they often come with a hot - dipped galvanized finish, which makes them suitable for use in outdoor and marine environments.
Installation Method: The installation of timber bolts is relatively simple. First, a predrilled hole is made in the wood. Then, the bolt is inserted into the hole and tapped into place if necessary. Finally, a nut is attached to the protruding threads to complete the connection. Only a hammer, a wrench, and a nut are required for the installation.
Applications: Timber bolts are primarily used in marine and wood applications, such as decks, bridges, and other wooden structures. The head design helps prevent turning during installation and also serves as a barrier against water ingress in outdoor and marine environments. Due to their strength, they are well - suited to heavy - duty applications.
Brand: HB(HAIYAN BOLT)
Size: 7/8”, 1″ ,1 1/4″
Length: 46.5”,47”,48.5”
Material: Carbon Steel(Equals to A36 Material)
Grade: ASTM A307Gr.A
Thread: UNC
Finish: Plain with oil, H.D.G.
Assembly: with hex nut and flat washer(SAE or USS)
Packing: Plastic bags into plywood case
Supply Ability: 1500Tons per months
Quick Delivery: For any urgent need of timber bolt, we can make 2FCL delivery within one week for the first shipment.
Haiyan Bolt manufactures timber bolts from 1/2″ diameter through 1-1/2″ diameter in most ASTM and SAE specifications. Special timber bolt molds can be created to produce non-standard head dimensions or shapes according to customer special request and bolts head with customer company name and/or logo.
