Arrow MK33 BD 26D Asylum Knob Cylindrical Lock, Ball Knob, Arrow A Keyway, T-Strike, Satin Chrome, Non-handed.
MK Series Grade 2 Cylindrical Knob Locks
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 – 2-3/4" (69.85mm)
- 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 a zinc dichromate finish for corrosion resistance. 7/8" (22.225mm) bore in the edge of the 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 pins for stock. Can be master keyed, grandmaster keyed and construction master keyed. 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.
Product Specs
| Vendor | Assa Abloy |
| Manufacturer | Arrow |
| SKU | MK33-BD-26D |
| Grade | Grade 2 |
| Installation | Commercial |
| Origin | Mexico |
| Unit of Measure | Each |
| Base Material | Brass, Bronze |
| UL Listing Type | BHMA A156.2, Series 4000, Grade 2, UL Listed |
| ANSI Number | F87 |
| Limited Warranty | 1 Year Warranty |
| Fire Rated | 3 Hours {A} |
| Burglar Rated | No |
| Finish | 626/US26D |
| Finish Description | Satin Chrome |
| Finish Family | Matte Silver |
Technical Specs
| Function | 33-Asylum |
| Function Family | Institutional |
| ANSI Function |
F87 - Asylum |
| Lever/Knob Design | BD - Ball Knob |
| Lever/Knob Design Family | Ball Knob |
| Rose/Escutcheon Design |
2-9/16" Rose Diameter |
| Rose/Escutcheon Dimensions | 2-9/16" |
| Cylinder Type |
Conventional Cylinder |
| Num Pins | 6 |
| Key(s) | Cut |
| Num of Keys | 2 |
| Handing | Non-handed |
| Door Thickness | 1-3/8" to 1-3/4" |
| Std. Latch Number | 114 |
| Std. Latch Type | Deadlatch |
| Std. Latch Backset Dim | 2-3/4" |
| Latch Bore Diameter | 7/8" |
| Lock Face Size | 1-1/8" x 2-1/4" |
| Bolt Projection | 1/2" |
| Bore Hole Diameter | 2-1/8" |
| Std. Strike Number | 300 |
| Std. Strike Type | T-Strike |
| Std. Strike Height | 2-3/4" |
| Std. Strike Width | 1-1/8" |
| Screws | Wood/Machine Screws |
| Product Type | Cylindrical Lock |
