Arrow Lock MK17-BD-26D Grade 2 Classroom Knob Lock

Arrow MK17-BD-26D Grade 2 Classroom Knob Lock combines functionality with a sleek design, making it an excellent choice for commercial environments. This Grade 2 cylindrical lock features a durable ball knob and a conventional cylinder, finished in a stylish satin chrome that enhances any door's aesthetic. Designed with accessibility in mind, the MK Series provides simple solutions for varied applications where heavy-duty hardware may not be necessary. Constructed from cold-rolled steel with a zinc dichromate finish, the lock chassis ensures corrosion resistance, while the brass latch offers a reliable ½" throw. The MK17-BD accommodates standard door thicknesses from 1-3/8" to 1-3/4" and requires a standard 2-1/8" bore hole for installation. Its reversible handing allows for flexibility during installation, and the solid brass 6-pin cylinder can be easily masterkeyed for added security. Suitable for classrooms and other communal spaces, this lock is UL listed, meeting BHMA A156.2, Series 4000 standards. With two included 5-pin brass keys, the Arrow MK17-BD-26D offers both style and security, making it a smart choice for professionals seeking reliable door hardware solutions.

Grade 2 Classroom Knob Lock

Grade 2 Classroom Cylindrical Lock, Ball Knob, Conventional Cylinder, 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