McKinney TA2731 4-1/2 x 4 Two-Knuckle Standard Weight Full Mortise Butt Hinge

The McKinney TA2731 is a full mortise, two-knuckle standard weight butt hinge measuring 4-1/2 x 4 inches. Designed and manufactured by McKinney -- one of the most trusted names in commercial and architectural door hardware -- the TA2731 delivers reliable, consistent performance in full mortise hinge applications. This hinge is Approved for NFPA 80 fire-rated openings.

Institutional Grade Features & Benefits

• Full Mortise Design: The TA2731 is engineered for full mortise installation, meaning both leaves are recessed flush into the door edge and frame for a clean, professional appearance and secure mechanical connection.
• Two-Knuckle Construction: The two-knuckle configuration provides a streamlined, architectural profile suited to applications where a refined aesthetic is as important as durable function.
• Standard Weight Rating: Sized and constructed as a standard weight hinge, the TA2731 is appropriate for doors within the weight and frequency-of-use parameters typical of standard commercial door applications.
• Fire Rating: Approved for NFPA 80 fire-rated openings.
• McKinney Quality: Backed by McKinney's long-standing reputation for precision manufacturing and consistent quality in architectural butt hinges used across commercial, institutional, and industrial door openings.
• 4-1/2 x 4 Inch Dimensions: This standard commercial hinge size is widely specified by architects and contractors for a broad range of door widths and weights within the standard weight category.

Technical Details

Gauge (thickness): 0.134 in. -- the exact steel leaf thickness for this weight class and leaf height, per the McKinney Full-Line Catalog (AADSS1010289).