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

  • 6621 LJ CN D125 MK NOKEY

    $35.27 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
  • 6621 NR D046 KD

    $30.19 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    6 Pins
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    Not Included
  • 6621 LF CN WCS6 KAMK LZ1 3KEY

    $30.88 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
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    3 keys per lock
  • 6621 NR CN D036 KD 4KEY

    $35.33 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    4 keys per lock
  • 6621 NR CN WCS5 KD NOKEY

    $23.08 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
  • 6621 NR LF D04 KD NOKEY

    $30.59 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
    Keyed Different
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
  • 6621 NR LF D046 NOKEY

    $31.64 40% Off

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

    $25.64 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
  • 6621 CN D125 KD LZ2 1KEY

    $34.48 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    1 key per lock
  • 6621 NR LJ CN D046 LZ4 4KEY

    $42.22 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    6 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
  • 6621 NR CN D035 MK LZ1 1KEY

    $35.03 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    1 key per lock
  • 6621 NR LJ D046 KAMK 1KEY

    $34.49 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    6 Pins
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
  • 6621 CN D03 LZ3 NOKEY

    $35.81 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 CN D03 KAMK LZ4 4KEY

    $42.33 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
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
  • 6621 LJ D125 LZ3 3KEY

    $35.95 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
  • 6621 NR CN WCS5 LZ3 NOKEY

    $27.08 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 LJ D03 KD LZ2 1KEY

    $33.38 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    1 key per lock
  • 6621 LJ D03 MK LZ3 NOKEY

    $36.60 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 LJ D035 LZ1 1KEY

    $32.04 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    1 key per lock
  • 6621 CN WCS KD LZ4 1KEY

    $28.40 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    1 key per lock
  • 6621 NR LJ CN D036 KA LZ3 NOKEY

    $39.27 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 LJ D036 KD LZ4 3KEY

    $38.32 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6621 NR LJ CN WCS MK LZ4 3KEY

    $33.10 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6621 NR LJ CN WCS KAMK LZ3

    $31.38 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
  • 6621 CN WCS5 MK LZ3

    $28.97 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
  • 6621 LJ WCS5 KA LZ2 NOKEY

    $25.49 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
  • 6621 LJ WCS6 KD LZ4 4KEY

    $30.82 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
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
  • 6621 NR LF D125 KD LZ2

    $33.26 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    Not Included
  • 6621 NR LF D125 KA LZ1 1KEY

    $32.76 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    1 key per lock
  • 6621 LF D04 KAMK LZ1 3KEY

    $35.89 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    3 keys per lock
  • 6621 LJ CN D046 LZ2 3KEY

    $38.34 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    6 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    3 keys per lock
  • 6621 NR LF D036 KD LZ4 3KEY

    $38.20 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6621 LJ CN D125 KD LZ1 1KEY

    $34.71 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    1 key per lock
  • 6621 LJ CN D125 KD LZ4

    $38.70 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    Not Included
  • 6621 LF D125 KAMK LZ1 NOKEY

    $34.65 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    0 keys per lock
  • 6621 LJ CN D036 LZ3 1KEY

    $38.43 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
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    1 key per lock
  • 6621 NR LF CN D12 LZ1 3KEY

    $35.83 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Keying
    Not Included
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    3 keys per lock
  • 6621 LJ CN WCS KA LZ3 3KEY

    $30.73 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
  • 6621 NR LF CN D125 LZ3 NOKEY

    $37.26 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 LF D036 MK LZ3 NOKEY

    $37.53 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 LF D036 KAMK LZ1 1KEY

    $35.70 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    1 key per lock
  • 6621 LJ CN WCS5 KAMK LZ1 4KEY

    $31.18 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    4 keys per lock
  • 6621 NR LF CN D125 KAMK LZ4 3KEY

    $42.55 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6621 LF WCS KAMK LZ2

    $27.26 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    Not Included
  • 6621 NR LF CN WCS KD LZ3

    $28.53 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
  • 6621 NR LF CN WCS5 MK LZ4 3KEY

    $32.98 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    3 keys per lock
  • 6621 NR LF CN WCS5 KAMK LZ3 NOKEY

    $31.26 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
  • 6621 NR D12 KD LZ3 3KEY

    $34.38 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
  • 6621 LF CN D04 MK LZ2

    $37.82 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    Not Included
  • 6621 NR D12 MK LZ3 3KEY

    $36.27 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
Showing 2851 - 2900 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