Arrow Lock MK33-BD-03 Grade 2 Asylum Function Knob

Arrow MK33-BD-03 Grade 2 Asylum Function Knob is designed to meet the accessibility requirements of commercial applications while providing a stylish and durable locking solution. Featuring a polished brass finish and a ball knob design, this Grade 2 cylindrical lock balances aesthetics with functionality. Its non-handed installation simplifies the setup process, ensuring versatility in various door configurations. Constructed from cold-rolled steel with a zinc dichromate finish, the lock chassis provides excellent corrosion resistance, making it suitable for a range of environments. It accommodates standard door thicknesses from 1-3/8" to 1-3/4" and requires a 2-1/8" bore for installation. The latch, with a 1/2" throw, is made of brass and housed in a steel casing, while the standard T strike ensures a secure fit. The Arrow MK series boasts a solid brass 6-pin cylinder, which is keyed to 5 pins for stock and can be masterkeyed for added convenience. Supplied with two brass keys, this lock offers peace of mind and ease of access. UL Listed and compliant with ANSI F87 standards, the Arrow MK33-BD-03 is an ideal choice for professionals seeking reliable, high-quality door hardware.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Ball Knob, Conventional Cylinder, Bright 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