Arrow Lock MK31-BD-26D-CS Grade 2 Communicating Knob Loc

Arrow MK31-BD-26D-CS Grade 2 Communicating Knob Lock offers a reliable and stylish solution for your commercial locking needs. This double cylinder cylindrical lock features a robust ball knob design and is equipped with a conventional Schlage C keyway. Its satin chrome finish not only enhances aesthetic appeal but also ensures durability and resistance against corrosion. Designed for accessibility, the Arrow MK Series is perfect for applications where heavy-duty hardware may be excessive. The lock chassis is constructed from cold-rolled steel with a zinc dichromate finish, providing both strength and a long-lasting performance. It fits standard door thicknesses ranging from 1-3/8" to 1-3/4" and requires a 2-1/8" bore through the door for installation. The lock features a brass latch with a 1/2" throw and is non-handed, making it versatile for various door configurations. Included with the lock are two 5-pin brass keys, and it is master key compatible for added security options. With a UL listing and a 1-year warranty, the Arrow MK31-BD-26D-CS is a dependable choice for enhancing the security of your commercial spaces while meeting accessibility requirements.

Grade 2 Communicating Knob Loc

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