Master Lock 6840 Solid Brass Pro Series Rekeyable Padlocks 1-3/4" (44mm)

  • 6840 KA LF NR WCS LZ4

    $22.92 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    Lock Body Only
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 4 areas
  • 6840 KA LF NR W27 4KEY LZ3

    $27.17 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W27
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 3 areas
  • 6840 KA LF NR WP4 3KEY LZ2

    $32.22 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    Edge Key Control 4-Pin
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 2 areas
  • 6840 N KD LF NR W81 NOKEY

    $20.95 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Included
    Keying
    Keyed Different
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 N KA LF CN W15 4KEY LZ2

    $29.08 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 2 areas
  • 6840 N KD LJ W7000NISI

    $21.58 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    6-Pin W7000 with Nickel Silver Key
    Bump Stop
    Included
    Keying
    Keyed Different
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 N KD LJ CN W17

    $23.55 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    5-Pin W17
    Bump Stop
    Included
    Keying
    Keyed Different
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 KA LF CN W1 4KEY LZ4

    $31.00 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    4-Pin W1
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 4 areas
  • 6840 MK LJ CN NR W1 3KEY LZ2

    $29.71 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    4-Pin W1
    Bump Stop
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 2 areas
  • 6840 LF W27 1KEY LZ1

    $21.57 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    5-Pin W27
    Bump Stop
    Not Included
    Keying
    Not Included
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 1 area
  • 6840 N KD LJ CN NR WP4 4KEY

    $35.12 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    Edge Key Control 4-Pin
    Bump Stop
    Included
    Keying
    Keyed Different
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 N KA LF CN NR W15 1KEY LZ2

    $26.72 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 2 areas
  • 6840 MK LJ CN NR W81 1KEY LZ2

    $28.53 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 2 areas
  • 6840 N KAMK NR W1 3KEY

    $24.50 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    4-Pin W1
    Bump Stop
    Included
    Shackle Length
    1-3/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 N KA LJ W7000NISI NOKEY LZ1

    $23.54 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    6-Pin W7000 with Nickel Silver Key
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 1 area
  • 6840 N KA LJ WP6 3KEY LZ1

    $31.64 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    Edge Key Control 6-Pin
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 1 area
  • 6840 KA LF NR W15

    $20.98 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 N KAMK CN W15

    $25.87 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 KA LF CN NR W7000 1KEY LZ3

    $27.36 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    6-Pin W7000
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 3 areas
  • 6840 N KA LJ CN NOKEY LZ1

    $25.50 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    5-Pin W6000
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 1 area
  • 6840 KAMK LJ CN W7000 3KEY

    $27.85 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    6-Pin W7000
    Bump Stop
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 N KA LF W17 NOKEY

    $21.62 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    5-Pin W17
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 N KA LF W81 3KEY

    $22.81 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 N KA LJ CN W81 3KEY LZ2

    $27.95 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 2 areas
  • 6840 MK LF CN NR WP6 4KEY

    $37.50 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    Edge Key Control 6-Pin
    Bump Stop
    Not Included
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 KD LF NR WP6 3KEY LZ1

    $30.27 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    Edge Key Control 6-Pin
    Bump Stop
    Not Included
    Keying
    Keyed Different
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 N KA LJ CN NR W27 1KEY LZ1

    $25.50 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    5-Pin W27
    Bump Stop
    Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 N MK WP6 4KEY LZ1

    $35.48 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    Edge Key Control 6-Pin
    Bump Stop
    Included
    Shackle Length
    1-3/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 1 area
  • 6840 KAMK CN W15 1KEY LZ2

    $27.77 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Not Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 2 areas
  • 6840 N KAMK LF W15 4KEY

    $27.08 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Included
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Not Included
  • 6840 MK LJ NR WCS 1KEY

    $20.27 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    Lock Body Only
    Bump Stop
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 N MK NR WP4 NOKEY LZ3

    $29.98 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    Edge Key Control 4-Pin
    Bump Stop
    Included
    Shackle Length
    1-3/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 3 areas
  • 6840 KA LF CN NR

    $23.52 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    5-Pin W6000
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 KAMK CN NR 4KEY LZ1

    $28.86 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W6000
    Bump Stop
    Not Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 MK LJ NR W81 4KEY

    $25.80 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Not Included
  • 6840 KAMK CN NR W1 LZ4

    $30.33 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    4-Pin W1
    Bump Stop
    Not Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 4 areas
  • 6840 LJ W15 3KEY LZ3

    $25.36 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    5-Pin W15
    Bump Stop
    Not Included
    Keying
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 3 areas
  • 6840 N MK CN NR W81 4KEY LZ1

    $28.82 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 KA LJ CN WCS 3KEY LZ1

    $22.87 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    Lock Body Only
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Custom Marking
    Laser engraved in 1 area
  • 6840 KAMK CN NR W27 LZ4

    $30.33 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    5-Pin W27
    Bump Stop
    Not Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 4 areas
  • 6840 N MK CN NR W7000NISI 1KEY LZ1

    $27.04 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    6-Pin W7000 with Nickel Silver Key
    Bump Stop
    Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 KAMK CN NR W81 4KEY LZ1

    $28.86 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Not Included
    Shackle Length
    1-3/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 KD LF CN NR W81 3KEY LZ1

    $25.30 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Not Included
    Keying
    Keyed Different
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 LJ NR WCS 3KEY LZ4

    $23.47 42% Off

    Number of Key
    3 keys per lock
    Cylinder Type
    Lock Body Only
    Bump Stop
    Not Included
    Keying
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 4 areas
  • 6840 LJ NR W1 4KEY LZ1

    $23.99 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    4-Pin W1
    Bump Stop
    Not Included
    Keying
    Not Included
    Shackle Length
    2-7/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 KD LF CN NR WP4 4KEY LZ4

    $39.53 42% Off

    Number of Key
    4 keys per lock
    Cylinder Type
    Edge Key Control 4-Pin
    Bump Stop
    Not Included
    Keying
    Keyed Different
    Shackle Length
    1-9/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 4 areas
  • 6840 N MK LF NR W27 1KEY LZ1

    $25.30 42% Off

    Number of Key
    1 key per lock
    Cylinder Type
    5-Pin W27
    Bump Stop
    Included
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 N MK LF NR W81 NOKEY LZ1

    $25.30 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    5-Pin W81
    Bump Stop
    Included
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 KAMK LF NR LZ1

    $25.34 42% Off

    Number of Key
    2 keys per lock
    Cylinder Type
    5-Pin W6000
    Bump Stop
    Not Included
    Shackle Length
    1-9/16" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 1 area
  • 6840 KA LJ CN NR W7000 NOKEY LZ3

    $27.41 42% Off

    Number of Key
    0 keys per lock
    Cylinder Type
    6-Pin W7000
    Bump Stop
    Not Included
    Keying
    Keyed Alike
    Shackle Length
    2-7/16" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Custom Marking
    Laser engraved in 3 areas
Showing 1 - 50 of 31560 items

Product Features

Best used near water, or in other applications that take advantage of brass's corrosion-resistant properties. Switch out the cylinder almost instantly thanks to Master Lock's removable cylinder design and save money on costly lock replacements.

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  • Dimensions
    • Body Width: 1-3/4" (44mm)
    • Shackle Diameter: 3/8" (9mm)
    • Vertical Clearance: 1-3/16", 1-9/16", 2-7/16", 5-5/8" (30mm, 40mm, 61mm, 143mm)
    • Horizontal Clearance = 29/32" (23mm)

All orders must be in increments of 6