galvanized

Machine bolts are a type of fastener that is used to join together two or more components like wood beams to utility poles, or metal brackets to steel columns, etc. They are available in a variety of types, sizes, materials, chemical treatments, and can be used in a wide range of applications on a ropes course or zipline structure.

One of the most important factors to consider when choosing a machine bolt is the grade. The grade of a machine bolt indicates its strength and performance and a specific grade may be called out by standards, regulations or engineering criteria. The higher the grade, the stronger the bolt.

Some of the most common grades of machine bolts include:

• A307: This is a general-purpose grade that is suitable for most applications.
• A325: This is a high-strength grade that is used in applications where high strength is required.
• Grade 8: This is a very strong grade that is used in applications where extreme strength is

Wire rope is a mainstay and central component of modern ropes course, challenge course and zip line installations.  In teh ropes course and zipline industry we typically utalize flexible wire rope like 1/4" to  3/8" GAC (Galvanized Aircraft Cable)or IWRC (Independant wire rope core) in sizes up to 1". It's important for designers, installers, inspectors and operators to understand some basics on wire rope design and inspection.

Wire rope construction

Wire rope is made up of a number of individual wires that are twisted together. The wires can be made of a variety of materials, including steel, stainless steel, and aluminum. The type of material used will depend on the application. For example, steel wire rope is strong and durable, but it is also heavy. Stainless steel wire rope is corrosion resistant, but it is also more expensive than steel wire rope. Aluminum wire rope is lightweight, but it is not as strong as steel or stainless steel wire