ASTM bolt specifications and grades
ASTM standard for steel fasteners
What are ASTM fastener standards?
A fastener can be described as a hardware device that mechanically joins two or more objects together. The ASTM fastener standards are quite instrumental when it comes to specifying, testing, and evaluating various properties of the material. This would include its dimensional, metallurgical, and mechanical properties of different forms of fasteners.
ASME vs ASTM bolt standards
The ASTM bolt standards create standard test methods and material specifications for determining compliance. On the other hand, the ASME selects those ASTM fasteners that show adequate performance in various boiler and pressure vessel services. It also accepts them with the given limitations.
All nuts and bolts have specific ASTM specifications which depend upon the material and shape
Difference between ISO standards and ASTM bolt specifications
ISO standards are not a standard specified for fasteners. Rather, it is one of the most renowned quality standards in the world. The ASTM bolt standards define the mechanical properties of bolt whose size ranges between ½ to 11/2 inches. These bolt specs are used for high pressure and high temperature services.
What is the importance of ASTM specifications in fasteners?
The primary importance of ASTM fastener specification is that it helps manufacturers to manufacture fasteners that are safe and high in quality. This bolt grades are tested and evaluated for different properties so that they can be safely used in critical environments. The bolt specifications also define the chemical, metallurgical, and mechanical properties.