3 1/2" Hinges with 1/4" Radius

A “1/4″ radius” hinge has corners on the hinge leaves rounded with a ¼-inch curve rather than square corners. This subtle rounding may be required when replacing existing hinges or when the door frame’s mortise was routed for a rounded-corner hinge; using a square-corner hinge instead could result in mis-alignment, improper fit, or gaps.

These 3 ½″ hinges are designed to meet standard residential door specifications, supporting typical door weights and allowing smooth swinging action. They work well on interior doors, closets, bedrooms, bathrooms, or any standard residential door application where a 1/4″-radius hinge is specified.

Installation is simple: hinges come with standard leaf size and include mounting hardware. If you are replacing existing 1/4″-radius hinges, these are a direct swap — no extra mortising or modification necessary, which saves time and ensures proper alignment and function.

“1/4″ radius” refers to the rounded corners on the hinge leaf — instead of sharp 90° corners, the leaves have a ¼-inch curved corner. This matches doors/frames mortised for rounded-corner hinges and ensures proper fit and hinge-leaf seating.

Using the correct radius ensures the hinge sits flush, avoiding mis-alignment, uneven gaps, or poor closing action. It preserves door sealing, alignment, and appearance — especially on retrofit or replacement jobs.

Yes. As long as your door dimensions (backset, thickness, weight) match standard residential specs, these 3 ½″ 1/4″-radius hinges will work reliably for interior or light exterior doors.

Choose a radius hinge when replacing existing hinges that are rounded-corner, or when the door/frame is mortised for a rounded hinge — using the correct radius avoids fit issues and maintains alignment. If you’re unsure, inspect the existing hinge corners or the mortise shape before purchasing.