Arrow Lock MK33-BD-04-CS Grade 2 Asylum Function Knob

Arrow MK33-BD-04-CS Grade 2 Asylum Function Knob offers a reliable and stylish locking solution designed for commercial environments. This Grade 2 asylum cylindrical lock features a ball knob design, making it not only functional but also aesthetically pleasing. With a satin brass finish, it complements various architectural styles while ensuring durability. Constructed from cold-rolled steel with a zinc dichromate finish, the lock chassis is built to resist corrosion, making it suitable for high-traffic areas. The lock requires a standard 2-1/8" bore and accommodates door thicknesses between 1-3/8" and 1-3/4". It offers a 1/2" throw brass latch and is equipped with a conventional 6-pin cylinder featuring a Schlage C keyway, allowing for master keying options. The reversible handing adds flexibility during installation, while the lock's 3-hour fire rating ensures safety in emergencies. Ideal for institutional applications, the MK Series balances accessibility and security without the need for heavy-duty options. The Arrow MK33-BD-04-CS is an excellent choice for architects and contractors seeking a dependable and elegant locking mechanism for their projects.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Ball Knob, Conventional Cylinder Schlage C Keyway, 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