IML Security Supply
Storeroom Ball Knob, Satin Chrome US26D, Grade 2, Less Cylinder

Part#: ARRMK12BD26D-LC-2 3/4 BS
Hot#: 126026
 Finish: Satin Chrome


Latchbolt operated by key in outside knob or by inside knob. Outside knob always rigid


  • Overview
  • Specifications

Arrow MK Series Cylindrical Locksets


Arrow MK Series offers 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 dutygrade one hardware may not be necessary


General Specifications:

  • 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)
    • 5" (127mm)
  • 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.

Cylinder Options:

  • Conventional–MK Series locksets are supplied standard with Arrow "A" keyway, 6 pin cylinder. As with all other lock series, various levels of masterkeying are available. Conventional cylinders are available in a variety of competitive manufacturers keyways.Supplied with two brass keys.
  • Interchangeable Core – Lockset prepared for use with 6 or 7 pin interchangeable core. Supplied less core, but packed with 6 and 7 pin tailpieces. Will also accept cores manufactured by Best™, Falcon™, Medeco Keymark™ and others. Suffix "IC" to design. Temporary Arrow construction cores are also available.

  • Finishes

    » 605 US3 03 Bright Brass
    » 606 US4 04 Satin Brass
    » 609 US5 05A Antique Brass
    » 612 US10 10 Satin Bronze
    » 613 US10B 10B Dark Oxide Bronze, Oil Rubbed
    » 619 US15 15 Nickel Plated
    » 625 US26 26 Bright Chromium Plated
    » 626 US26D 26D Satin Chromium Plated

    Series Functions

    1. MK01 F75/161N, 160N Passage
    2. MK02 F76/161L, 160L Privacy
    3. MK03 F111 Communicating Passage
    4. MK04 F77/161P, 160P Patio
    5. MK05 F78/161M, 160M Communicating
    6. MK08 Single Dummy Trim
    7. MK11 F109 (F81 & F82)/161A, 160A Entrance/Office
    8. MK12 F86/161D, 160D Storeroom
    9. MK13 F82A/161B, 160B Exterior
    10. MK14 F92/160E Service Station
    11. MK15 F93/161H, 160H Hotel
    12. MK17 F84/161R, 160R Classroom
    13. MK18 F113 Communicating Classroom
    14. MK31 F80/161S, 160SCommunicating
    15. MK32 F88/161C, 160C Public Entrance
    16. MK33 F87/161W, 160W Asylum
    17. MK34 Exterior


    Suggested Specification:
    All locksets shall be MK Series Cylindrical locksets as supplied by Arrow Lock company.

    - Locksets shall meet ANSI/BHMA requirements for Series 4000, Grade 2, and shall be U.L. and c.U.L. listed for 3 hour, A label openings.

    - Lockset shall be non-handed. Lockset shall have no exposed screws. Chassis mounting screws may be accessed only when knob and rose are removed.

    - Trim shall consist of wrought with wrought brass or bronze rose scalps.

    - Disassembly of lockset for cylinder removal shall not be required.

    - Cylinder shall be changed by removing the knob.

    - All products shall be of one manufacturer.

    - All locksets shall carry a three year limited warranty.

    Order Example:
    Series/Function/Design/Finish/Strike/Latch/Keying/Options

    Specifications for Arrow Lock Company ARRMK12BD26D-LC-2 3/4 BS

    Specifications
    Backset2-3/4"
    Cylinder IncludedNo
    Cylinder Type6-Pin Cylinder
    Door Bore Size2-1/8"
    Door Thickness Max1-3/4"
    Door Thickness Min1-3/8"
    Finish ColorSatin Chrome
    FunctionStoreroom
    GradeGrade 2
    HandingNon-Handed
    Knob/Lever DesignBall BD
    Knob/Lever StyleKnob
    Latch Bolt Faceplate Size2-1/4" x 1-1/8"
    Latch Bolt Throw1/2"
    Latch Bolt TypeDeadlatch
    Lock CategoryCylindrical Lock
    Rose/Escutcheon Size2-9/16"
    Rose/Escutcheon StyleRose
    SeriesMK Series
    Strike Size2-3/4" x 1-1/8"
    SupplierArrow
    Other Specs
    Alternate Codes126026, ARRMK12BD26D-LC, ARRMK12BD26D-LC34, MK12BD26D, MK12BD26D-LC, MK12BD26D-LC-2 3/4 BS, MK12BD26D-LC34, MK12BD26DLC, MK12BD26DLC234BS, MK12BD26DLC34
    Knob StyleBall Knob
    Latch Bolt Face TypeSquare Corner