Arrow Lock MK31-BD-10 Grade 2 Communicating Knob Loc

Arrow MK31-BD-10 Grade 2 Communicating Knob Lock offers a robust and reliable solution for those seeking accessibility and security in commercial environments. This Grade 2 double cylinder cylindrical lock features a sleek ball knob design and a durable satin bronze finish, making it both functional and aesthetically pleasing. Constructed from cold-rolled steel with a zinc dichromate finish, the lock chassis ensures corrosion resistance, while the non-handed design allows for easy installation on doors between 1-3/8" and 1-3/4" thick. The standard 2-1/8" bore requirement makes it compatible with most door configurations. This lock is available with various backsets, including 2-3/8", 2-3/4", and more, providing flexibility for different applications. The MK Series is crafted to meet accessibility needs without compromising on quality. It features a solid brass 6-pin cylinder, keyed to 5 pins, and can be master keyed for added security options. Additionally, the product includes two brass keys as standard. With a UL listing under BHMA A156.2, Series 4000, Grade 2, the Arrow MK31-BD-10 is backed by a one-year limited warranty, ensuring peace of mind for professionals and homeowners alike. This lock is an excellent choice for commercial spaces where durability and style are paramount.

Grade 2 Communicating Knob Loc

Grade 2 Double Cylinder Communicating Cylindrical Lock, Ball Knob, Conventional Cylinder, Satin 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