ICC-ES AC491
Full Name
ICC-ES AC491 – Acceptance Criteria for Self-drilling Tapping Screws Used with Aluminum
Scope
ICC-ES AC491 establishes the acceptance criteria for self-drilling tapping screws (SDTS) specifically designed for use with aluminum components in building construction. It covers:
- Material requirements: specifies the chemical composition, mechanical properties, and corrosion resistance requirements for the screws and their coatings.
- Design and construction: outlines the dimensional and geometric requirements for the screws, including thread form, point type, and head style.
- Performance requirements: establishes minimum performance criteria for the screws, such as pullout strength, shear strength, and torque-tension relationship.
- Testing procedures: details the standard test methods to assess the mechanical properties and performance of the screws in aluminum substrates.
- Quality control: requires manufacturers to have quality control programs in place to ensure consistent product quality and adherence to the acceptance criteria.
By adhering to AC491, manufacturers and users can ensure that self-drilling tapping screws used with aluminum components in building construction meet the necessary performance and safety requirements.
Resources
Keywords
acceptance criteria; self-drilling tapping screws; aluminum; mechanical properties; corrosion resistance; pullout strength; shear strength; torque-tension relationship; thread form; point type; head style; coatings