Wedge Anchor

A wedge anchor is a torque-controlled expansion anchor designed for fastening into sound concrete. It is used to secure base plates, brackets, railings, and equipment where the selected approval permits the load and concrete condition. The anchor works by tightening the nut, which draws the cone into the expansion clip, forcing it to expand against the drilled hole and transfer the load into the concrete. Buyers must specify anchor diameter and length, fixture thickness, embedment, hole diameter, concrete condition, edge distance, spacing, material, and approval. Standards listed here govern particular forms and do not make sizes, materials, or finishes interchangeable. The RFQ should state the exact standard or drawing, required configuration, quantity, and inspection evidence. Materials on file include carbon steel and stainless steel. Surface finishes may include zinc-plated, hot-dip galvanized, or stainless finish, but these must be confirmed against the selected standard and supplier evidence. Strength and performance data must be taken only from the exact product approval and the specific concrete condition. Always verify model-specific values and standards with the legal manufacturer or supplier before use.

Tightening the nut draws the cone into the expansion clip, forcing the clip to expand outward against the walls of the drilled hole. This creates a mechanical interlock that transfers the applied load into the surrounding concrete. The anchor is torque-controlled, meaning the installation torque must be within the range specified by the approval to achieve the intended expansion and load capacity. The concrete must be sound and crack-free as per the approval conditions. The anchor's performance depends on correct hole diameter, embedment depth, edge distance, and spacing, all of which must be verified against the product approval and the actual installation conditions.