Arrow Lock MK33-BD-10B Grade 2 Asylum Function Knob

Arrow MK33-BD-10B Grade 2 Asylum Function Knob combines functionality with a sleek design, making it an ideal choice for commercial applications. This Grade 2 cylindrical lock features a ball knob and a conventional cylinder, finished in an elegant oil-rubbed bronze, providing both style and security. The non-handed design enables versatile installation, accommodating various door thicknesses ranging from 1-3/8" to 1-3/4". Built with durability in mind, the lock chassis is crafted from cold-rolled steel with a zinc dichromate finish for enhanced corrosion resistance. It requires a standard 2-1/8" bore and offers backset options of 2-3/8", 2-3/4", 3-3/4", and 5". The brass latch features a 1/2" throw, ensuring reliable security, while the latch housing is also constructed from steel for added strength. The Arrow MK Series is designed to meet accessibility requirements with ease, featuring various finishes and functions suitable for institutional settings. Each lock comes with a solid brass 6-pin cylinder, which can be master keyed for added convenience. With a UL listing and a limited 1-year warranty, the Arrow MK33-BD-10B is a dependable choice for professionals seeking a reliable locking solution.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Ball Knob, Conventional Cylinder, Oil-Rubbed Bronze 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