- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 05 Feb 2020
Structural fasteners are strong, heavy-duty fasteners that are necessary for the construction of structures which include steel to steel connections. In other words, they are used when one metal structure needs to be connected to another.
The typical application of structural fasteners is in bridge and building construction, where they are used to connect metal beams and girders. To be considered for structural purposes, fasteners need to be made of quenched and tempered steel with a minimal tensile strength of 120 ksi.
Some of the most commonly used structural fasteners are:
- Heavy hex bolts. This type of bolt or cap screw comes with a hexagonal head, and is larger and thicker than standard hex bolts. A325 and A490 specifications are suitable in this application.
- Heavy hex nuts, also known as finish nuts. Heavy hex nuts are used along with bolts - both for strength and for a thick finished look.
- Flat washers. These high hardness and low-deformation plain washers, punched washers, or flat washers are used as spacers and load distributors.
- Tension control bolts. TC bolts are extremely adept at handling vibrations and preventing load reversals and they eliminate slips in connections.
The quality of structural fasteners specified is of prime importance because they will be holding together heavy and crucial structures. Therefore, they must be durable, sturdy, rust-proof and corrosion-free for several years. Using poor quality structural fasteners not only reduces the durability of the overall structure but also puts lives at risk.
 Related articles on Designing Buildings Wiki
- Civil engineer.
- Civil Engineering during the Industrial Revolution in Britain.
- Concept structural design of buildings.
- Elements of structure in buildings
 External references
Featured articles and news
New editor covered facilities management, operations and construction in the US.
Exclusive log cabins on the North Antrim coastline.
Proactive forestry for strategic water management.
CIOB urges construction to share PPE with healthcare providers.
Why not write that article you've always meant to?
One of the seven man-made wonders of Arizona.
A more flexible approach is needed.
A quick step-by-step introduction to the BREEAM process.
First pioneered in the USA and then France.
The European BACS market has been showing signs of growth.
Free ICE publication for World Water Day.