IAPMO UES EC 023Full Name IAPMO UES EC 023 – Evaluation Criteria for Self-Tapping, Self-Drilling Standoff ScrewsScope This criteria applies to the evaluation of self-drilling, self-tapping standoff screws used as an alternative to welded stud shear connectors for shear transfer at the interface between concrete slabs and supporting steel members.Keywords self-tapping screw; self-drilling screw; standoff screw; fastener; IAPMO UES; evaluation criteriaResourcesIAPMO UES website: adopted criteria directory Need more info?