Screw and Rivets are the best choice for fastening metal jacketing and coating insulations of tanks, boiler and pipes which cause to be its long lasting life.
Self-Tapping Screws are the kind which commonly used in insulation industry and are used in different sizes, from 3.9mm up to 6.3mm diameter and from 9.5mm up to 25mm in length, based on its application.
Rivets which used in insulation industry are mostly of stainless steel type and the dimensions are determined based on its application.