What You Need to Know About Metal Connector Nails
Metal connector nails are specially designed fasteners used to secure metal hardware connectors—such as joist hangers, hurricane ties, and straps—to wood framing.
These nails are engineered for high shear strength, typically made from hardened steel, and often feature shorter lengths with thicker shanks to prevent bending and ensure a tight, secure fit.
They're essential in structural framing where building codes require specific fasteners for load-bearing metal connectors.
The number stamped on the nail head verifies that the nail meets specific code or performance requirements, such as:
ICC-ES/Building Code Compliance
Load capacity and shear strength standards
Why It Matters
Building Inspections:
Inspectors look for these markings to ensure the correct nail type was used — especially when fastening metal connectors. Nails without the correct marking may fail inspection.Code Compliance:
Nails used in structural connectors must meet strict standards (e.g., ASTM F1667), and the head marking is a quick visual cue that the nail is approved for structural use.
The number on the nail head is your proof of compliance. It tells inspectors and contractors that the nail is the right type, strength, and source for use with structural metal connectors.
Crispo Canada has a full line of ASTM Approved Joist Hangar (Metal Nail) Connectors
