Arrow Lock MK33-TA-04 Grade 2 Asylum Function Knob

Arrow Lock MK33-TA-04 Grade 2 Asylum Function Knob combines security and functionality in a sleek, user-friendly design. This Grade 2 cylindrical lock features a Tudor knob and a conventional cylinder, making it an excellent choice for commercial applications where heavy-duty hardware is unnecessary. Crafted from cold-rolled steel with a corrosion-resistant zinc dichromate finish, the lock chassis ensures durability. It requires a standard 2-1/8" bore through the door, accommodating door thicknesses of 1-3/8" to 1-3/4". The latch, made of brass with a 1/2" throw, adds to the reliability of this lock. Non-handed and reversible, the MK33-TA-04 is versatile, fitting various installation needs. The lock also features a solid brass 6-pin cylinder with the Arrow "A" keyway, which can be masterkeyed or grandmaster keyed, providing flexibility for access control. Available finishes include a stylish satin brass, making it an attractive addition to any setting. With a fire rating of 3 hours and compliance with ANSI F87 standards, this lock meets institutional requirements while ensuring safety. Arrow’s MK Series is designed to address accessibility requirements effectively, making it an ideal choice for architects, contractors, and building professionals.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Tudor Knob, Conventional Cylinder, Satin Brass 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