Arrow Lock MK33-TA-26D Grade 2 Asylum Function Knob

Arrow MK33-TA-26D Grade 2 Asylum Function Knob offers a robust yet sophisticated solution for commercial applications requiring accessibility. This Grade 2 cylindrical lock features a Tudor knob design and a durable satin chrome finish, making it an aesthetically pleasing choice that complements various architectural styles. The lock is non-handed, providing flexibility for installation on either side of the door. Crafted from cold-rolled steel with a zinc dichromate finish, the lock chassis ensures exceptional corrosion resistance, while the conventional cylinder features a solid brass, 6-pin design, keyed to 5 pins for stock. The MK33-TA is suitable for door thicknesses ranging from 1-3/8" to 1-3/4" and includes a latch with a 1/2" throw for reliable security. The standard 2-1/8" bore requirement simplifies installation, and the reversible handing accommodates various door configurations. With a fire rating of 3 hours and UL listing (BHMA A156.2, Series 4000, Grade 2), this lock meets stringent safety standards. The MK Series provides a clean design and functionality ideal for institutional settings, ensuring accessibility without compromising style or performance. Perfect for architects, contractors, and building professionals, the Arrow MK33-TA-26D is a dependable choice for demanding environments.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Tudor Knob, Conventional Cylinder, Satin Chrome Finish, Non-handed

Arrow MK Series offer the designer, architect and contractor simple solutions to accessibility requirements. Their clean designs, architectural finishes and available functions make them ideal for commercial applications where heavy duty grade one hardware may not be necessary.

The Arrow MK Series has a clear design and is a simple solution to accessibility requirements.

The MK Series is available in several finishes and functions that make them ideal for commercial applications where heavy duty grade one hardware may not be necessary.

• Lock Chassis – Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2-1/8" (53.97mm) bore through door.
• Backset – 2-3/8" (60.32mm) standard. 2-3/4" (69.85mm), 3-3/4" (95.25mm) and 5" (127mm) available.
• Door Thickness – 1-3/8" (34.92mm) to 1-3/4" (44.45mm). Latch – Brass with 1/2" (12.7mm) throw.
• Latch housing is steel, with zinc dichromate finish for corrosion resistance. 7/8" (22.225mm) bore in edge of door is required.
• Latch Front – Brass, bronze or stainless steel. Standard faceplate for 2-3/8” (60.32.mm) backset measures 2-1/4” (57.15mm) x 1” (25.40mm) with a flat front, for 2-3/4” (69.85mm) backset standard faceplate measures 2-1/4” (57.15mm) x 1-1/8” (28.57mm) with beveled front 1/8” (3.17mm) in 2” (50.8mm). 
• Strike – Brass, bronze or stainless steel. Standard “T” strike measures 2-3/4" (69.85mm) x 1-1/8" (28.57mm). Optional ANSI A115.1 strike measures 4-7/8" (123.82mm) x 1-1/4" (31.75mm). All strikes have a 1-1/4" (31.75mm) lip to center dimension.
• Handing– Reversible.
• Cylinder, Standard – Solid brass 6 pin cylinder with Arrow “A” keyway, keyed to 5 pin for stock. Can be masterkeyed, grandmaster keyed and construction masterkeyed. Conventional cylinders are also available in a variety of competitive manufacturer’s keyways. Supplied with two 5 pin brass keys for stock. Available in Schlage CS keyway and other competitive keyways.

Resources

• MK Series Cut Sheet
• MK Series Dummy Knob Template
• MK Series Grade 2 Cylindrical Knob Locks Cut Sheet
• MK Series Template