Master Lock 6421 ProSeries Weather Tough Interchangeable Core Padlock 2-1/8" (54mm)

  • 6421 LF CN NR WCS6 26D MK LZ1 4KEY

    $31.44 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    4 keys per lock
  • 6421 LJ NR WCS6 26D KD 3KEY

    $24.08 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
  • 6421 NR WCS MK LZ2 NOKEY

    $25.91 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Cylinder Type Finish
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6421 LF NR CY7 KAMK 3KEY

    $40.93 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Not Included
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
  • 6421 CY LZ3

    $38.32 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    Not Included
    Cylinder Type Finish
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
  • 6421 LJ CN CY4 KA 4KEY

    $42.06 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Alike
    Custom Marking
    Not Included
    Number of Key
    4 keys per lock
  • 6421 LF NR WCS6 26D KA LZ4 1KEY

    $29.13 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    1 key per lock
  • 6421 LF NR WCS7 LZ4 1KEY

    $29.36 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    1 key per lock
  • 6421 NR WCS6 KAMK LZ3 NOKEY

    $28.19 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6421 LF NR WCS7 KAMK LZ1

    $28.03 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Not Included
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    Not Included
  • 6421 LF NR WCS7 26D LZ4 NOKEY

    $29.36 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
  • 6421 LF NR WCS7 26D KD LZ4 1KEY

    $29.36 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    1 key per lock
  • 6421 LJ CY74 MK LZ2

    $41.68 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    Not Included
  • 6421 CY6 KAMK LZ3

    $41.19 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
  • 6421 LJ WCS4 KD LZ2 NOKEY

    $25.58 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6421 CN NR WCS6 26D LZ3 3KEY

    $29.42 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
  • 6421 NR WCS7 KD LZ4 4KEY

    $30.43 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
  • 6421 WCS6 KD NOKEY

    $21.12 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
  • 6421 CN NR WCS64 KA LZ1 3KEY

    $27.50 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    3 keys per lock
  • 6421 LF CN CY 26D MK LZ4 1KEY

    $46.04 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    1 key per lock
  • 6421 LJ WCS64 KA LZ3 4KEY

    $30.46 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    4 keys per lock
  • 6421 CN NR WCS7 26D KA LZ4

    $31.51 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    Not Included
  • 6421 LF CN CY6 26D LZ4 NOKEY

    $44.05 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
  • 6421 LJ NR CY4 KAMK LZ2 3KEY

    $42.75 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Standard SFIC
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Brass
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    3 keys per lock
  • 6421 LJ NR CY6 LZ3 4KEY

    $42.58 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    4 keys per lock
  • 6421 CN CY4 4KEY

    $39.52 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Brass
    Keying
    Not Included
    Custom Marking
    Not Included
    Number of Key
    4 keys per lock
  • 6421 LJ NR CY6 KAMK LZ2 NOKEY

    $41.45 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6421 CN CY6 MK

    $38.91 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Custom Marking
    Not Included
    Number of Key
    Not Included
  • 6421 LF CY 26D KA LZ4 3KEY

    $43.43 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6421 LJ NR CY7 KD LZ2 1KEY

    $39.69 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    1 key per lock
  • 6421 LJ CY6 26D MK 3KEY

    $39.07 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
  • 6421 LF CN CY74 LZ2 NOKEY

    $42.36 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6421 LJ NR WCS LZ4 NOKEY

    $28.38 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Cylinder Type Finish
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
  • 6421 LJ NR WCS KA LZ2 3KEY

    $27.76 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Cylinder Type Finish
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    3 keys per lock
  • 6421 LF CN CY74 KAMK LZ4

    $48.03 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    Not Included
  • 6421 CN CY64 KD LZ4 1KEY

    $42.52 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    1 key per lock
  • 6421 LF CY6 26D MK LZ3 3KEY

    $43.14 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
  • 6421 LF CY6 26D KAMK LZ2 4KEY

    $43.92 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    4 keys per lock
  • 6421 LJ NR WCS6 KA LZ2

    $26.46 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Removable Key
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    Not Included
  • 6421 WCS6 KD LZ4 3KEY

    $28.02 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6421 LJ CY74 KD

    $36.89 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    Not Included
  • 6421 WCS7 26D KD

    $22.23 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    Not Included
  • 6421 CN CY7 26D LZ4

    $43.63 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    Not Included
  • 6421 WCS6 26D KD LZ2 NOKEY

    $23.92 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6421 LF CY74 LZ3

    $40.96 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
  • 6421 WCS6 26D MK LZ2 NOKEY

    $25.91 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6421 LF CY74 KD LZ2 4KEY

    $42.16 37% Off

    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    4 keys per lock
  • 6421 LJ WCS 26D MK 1KEY

    $24.77 37% Off

    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Cylinder Type Finish
    Satin Chrome
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
  • 6421 CN CY74 MK LZ1 4KEY

    $44.02 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Function
    Non-Key Retaining
    Cylinder Type
    Standard SFIC
    Number of Pins
    7 Pins
    Cylinder Type Finish
    Satin Brass
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    4 keys per lock
  • 6421 WCS64 LZ3

    $25.32 37% Off

    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Function
    Non-Key Retaining
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Cylinder Type Finish
    Satin Brass
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
Showing 51 - 100 of 27015 items

Product Features

  • 2-1/8" (54mm) wide body
  • Boron Shackle
  • Shackle Dimensions:
    • Shackle Width: 5/16" (8mm)
    • Vertical Clearance: 1-1/8" (24mm)
    • Horizontal Clearance: 7/8" (22mm)
  • All orders must be in increments of 6