Master Lock 6621 Pro Series Key-in-Knob Padlock - Weather Tough

  • 6621 CN D03 MK NOKEY

    $33.70 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
  • 6621 NR LJ D03 KA LZ4 NOKEY

    $36.87 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
  • 6621 LF CN D036 MK LZ3 1KEY

    $40.20 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    1 key per lock
  • 6621 LF CN WCS6 KA NOKEY

    $26.42 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Keying
    Keyed Alike
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
  • 6621 LJ D04 MK 4KEY

    $35.07 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Custom Marking
    Not Included
    Number of Key
    4 keys per lock
  • 6621 LJ WCS6 4KEY

    $25.50 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Keying
    Not Included
    Custom Marking
    Not Included
    Number of Key
    4 keys per lock
  • 6621 LJ CN D036 KA

    $35.27 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Alike
    Custom Marking
    Not Included
    Number of Key
    Not Included
  • 6621 NR CN D12 KA LZ4 4KEY

    $40.44 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
  • 6621 NR LJ CN D04 LZ4 3KEY

    $39.94 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6621 NR LJ CN D04 KD LZ3 1KEY

    $37.38 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    1 key per lock
  • 6621 NR CN D04 MK 1KEY

    $33.70 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
  • 6621 NR CN D125 KAMK 1KEY

    $34.54 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
  • 6621 NR LJ CN D045 LZ4 NOKEY

    $38.70 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
  • 6621 NR LF D04 3KEY

    $31.83 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Keying
    Not Included
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
  • 6621 NR LF CN WCS6 MK NOKEY

    $27.47 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
Showing 16501 - 16515 of 16515 items

All orders must be in increments of 6

Product Features:

  • Choice of 22 Key-in-Knob keyways to match this padlock to your security door locks. See Related Information for options.
  • Ideal for harsh outdoor conditions - exclusive Weather Tough® cover protects lock from water, ice, dirt and grime
  • ProSeries® Padlocks are designed for Commercial/Industrial applications
  • 2-1/8" (54mm) heavy steel body withstands physical attack
  • 1-1/8" (29mm) tall, 5/16" (8mm) diameter hardened boron alloy shackle for superior cut resistance
  • Horizontal Clearance: 7/8" (22mm)
  • Dual ball locking mechanism resists pulling and prying
  • Lock available with or without cylinder to key at your facility. Accepts Lori® #1539 style cylinder.
  • Rekeyable 5- and 6-pin cylinder options.

Best Used For:

  • Truck Doors
  • Trailers, Vans & Moving Trucks
  • Manufacturing Environments
  • Industrial, Storefront & Business Gates