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

Arrow MK33-TA-26D-LC Grade 2 Asylum Function Knob offers a blend of security and accessibility for commercial applications. Featuring a Tudor knob design, this cylindrical lock is crafted with a satin chrome finish that not only enhances durability but also provides a sleek aesthetic. Its non-handed design allows for flexible installation on doors ranging from 1-3/8" to 1-3/4" in thickness. Constructed from cold-rolled steel with a zinc dichromate finish, the lock chassis is built for corrosion resistance, ensuring longevity even in demanding environments. The lock requires a standard 2-1/8" bore and is available with a 2-3/8" backset, making it easy to integrate into existing door hardware setups. The MK33-TA-26D-LC features a solid brass 6-pin cylinder, which can be masterkeyed, providing versatility in key management. Additionally, the brass latch has a ½" throw for reliable operation. This lock meets ANSI F87 standards for asylum functions, ensuring it is suitable for institutional settings where safety is paramount. With a limited 1-year warranty, the Arrow MK33-TA-26D-LC is an excellent choice for architects and contractors looking for reliable, aesthetically pleasing door hardware solutions.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Tudor Knob, Conventional Less 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