McKinney SQ314 4-1/2 x 4-1/2 Full Mortise Standard Weight Square Barrel Stainless Steel Hinge

The McKinney SQ314 is a full mortise, standard weight butt hinge featuring a distinctive square knuckle barrel that delivers a crisp, squared architectural appearance. Finished in stainless steel and sized at a 4-1/2 x 4-1/2 inch leaf, the SQ314 is engineered for installations where a clean, modern aesthetic is required alongside reliable, commercial-grade performance. The square barrel profile — rather than the traditional rounded knuckle — sets this hinge apart visually, making it a preferred specification for contemporary architectural door hardware projects.

Institutional-Grade Features & Benefits

• Full Mortise Design: Both leaves are mortised flush into the door edge and frame, producing a clean, recessed installation that protects the hinge from damage and maintains a consistent door reveal.
• Square Knuckle Barrel: The SQ314's signature squared barrel provides a modern, angular silhouette that coordinates with contemporary square-profile door hardware and architectural metalwork.
• Standard Weight Construction: At 0.134 in. steel leaf thickness, this hinge meets the demands of standard-duty commercial door applications without the added bulk of heavy-weight variants.
• Stainless Steel Material: The inherent corrosion resistance of stainless steel makes the SQ314 well suited for environments where durability and finish longevity are priorities.
• 4-1/2 x 4-1/2 Inch Leaf Size: A widely specified commercial hinge size, compatible with standard commercial door and frame preparations for straightforward specification and procurement.
• McKinney Quality: Engineered to the exacting tolerances of the McKinney full-line catalog, ensuring consistent fit and finish across large-scale commercial and institutional projects.

Technical Details