Arrow MK31-BD Grade 2 Communicating Cylindrical Knob Lock w/ Ball Knob

Arrow MK31-BD Grade 2 Double Cylinder Communicating Cylindrical Lock, Ball Knob

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.

Function: Communicating - ANSI F80
Dead locking latch bolt operated by knob from either side.
Turning key in either knob locks or unlocks its own knob independently.
Do not use on doors in rooms that have no other entrance.

Features
Lock Chassis: Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2-1/8" (53.97mm) bore through door.

Knob Style: B Wrought; Rose: D Wrought

Backset:  2-3/4" (69.85mm). 2-3/8" (60.32mm) 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).

Handing: Reversible.

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.

Cylinder: 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.

Certification & Compliance
All Arrow MK Series locks are U.L. and c.U.L. listed for use on 3 hour, A label or lesser doors and are certified to conform to the requirements of ANSI/BHMA A156.2, Series 4000, Grade 2.
• Federal Specification FF-H-106C

Model: Arrow MK31-BD-26D, MK31-BD-26D-CS, MK31-BD-26D-LC, MK31-BD-10B, MK31-BD-10B-CS, MK31-BD-10B-LC