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

  • 6621 NR LJ CN D125 MK 4KEY

    6621 NR LJ CN D125 MK 4KEY

    $37.74 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    5 Pins
    Custom Marking
    Not Included
    Number of Key
    4 keys per lock
    More Details

  • 6621 NR LJ CN WCS5 KA 1KEY

    6621 NR LJ CN WCS5 KA 1KEY

    $25.49 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
    More Details

  • 6621 LJ D125 KA LZ1

    6621 LJ D125 KA LZ1

    $32.88 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" 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
    Not Included
    More Details

  • 6621 CN D035 MK LZ4 4KEY

    6621 CN D035 MK LZ4 4KEY

    $41.49 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 NR LJ CN D03 KA LZ2 1KEY

    6621 NR LJ CN D03 KA LZ2 1KEY

    $36.89 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    1 key per lock
    More Details

  • 6621 LJ D03 KD LZ1 3KEY

    6621 LJ D03 KD LZ1 3KEY

    $33.28 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 1 area
    Number of Key
    3 keys per lock
    More Details

  • 6621 NR CN WCS5 KAMK LZ3

    6621 NR CN WCS5 KAMK LZ3

    $29.81 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
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
    More Details

  • 6621 NR LJ CN D035 KA LZ3 1KEY

    6621 NR LJ CN D035 KA LZ3 1KEY

    $38.22 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    1 key per lock
    More Details

  • 6621 NR LF D04 KA LZ3

    6621 NR LF D04 KA LZ3

    $35.43 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 Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
    More Details

  • 6621 NR LJ CN WCS KD LZ2

    6621 NR LJ CN WCS KD LZ2

    $27.32 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
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    Not Included
    More Details

  • 6621 NR LJ CN WCS5 KA LZ3

    6621 NR LJ CN WCS5 KA LZ3

    $29.49 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
    More Details

  • 6621 NR LF D12 KD LZ3 1KEY

    6621 NR LF D12 KD LZ3 1KEY

    $34.59 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" 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
    1 key per lock
    More Details

  • 6621 LF D04 KA LZ3 4KEY

    6621 LF D04 KA LZ3 4KEY

    $37.90 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 LF D04 MK LZ3 NOKEY

    6621 LF D04 MK LZ3 NOKEY

    $36.48 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 3 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 NR LF D035 LZ1 NOKEY

    6621 NR LF D035 LZ1 NOKEY

    $31.92 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" 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
    0 keys per lock
    More Details

  • 6621 LJ CN D12 MK LZ4 NOKEY

    6621 LJ CN D12 MK LZ4 NOKEY

    $40.59 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 LJ CN D12 KAMK LZ3 NOKEY

    6621 LJ CN D12 KAMK LZ3 NOKEY

    $40.11 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 LF D12 KAMK LZ3

    6621 LF D12 KAMK LZ3

    $37.32 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    Not Included
    More Details

  • 6621 LJ CN D035 LZ2 4KEY

    6621 LJ CN D035 LZ2 4KEY

    $38.52 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 LJ CN D036 KA LZ3 3KEY

    6621 LJ CN D036 KA LZ3 3KEY

    $40.51 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
    Laser engraved in 3 areas
    Number of Key
    3 keys per lock
    More Details

  • 6621 NR LF CN D046 MK LZ2 1KEY

    6621 NR LF CN D046 MK LZ2 1KEY

    $38.87 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    6 Pins
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    1 key per lock
    More Details

  • 6621 LF D036 KD LZ1

    6621 LF D036 KD LZ1

    $32.97 40% Off

    Function
    Non-Key Retaining
    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 1 area
    Number of Key
    Not Included
    More Details

  • 6621 LF D036 KD LZ3 3KEY

    6621 LF D036 KD LZ3 3KEY

    $36.88 40% Off

    Function
    Non-Key Retaining
    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 3 areas
    Number of Key
    3 keys per lock
    More Details

  • 6621 LJ CN WCS5 KD LZ1

    6621 LJ CN WCS5 KD LZ1

    $25.98 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
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    Not Included
    More Details

  • 6621 LJ CN WCS5 KD LZ4 4KEY

    6621 LJ CN WCS5 KD LZ4 4KEY

    $32.44 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
    Keying
    Keyed Different
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 LF D036 KAMK LZ3 3KEY

    6621 LF D036 KAMK LZ3 3KEY

    $39.61 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
    3 keys per lock
    More Details

  • 6621 LF WCS5 LZ1 NOKEY

    6621 LF WCS5 LZ1 NOKEY

    $23.19 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    0 keys per lock
    More Details

  • 6621 NR LF CN D035 KA LZ3 NOKEY

    6621 NR LF CN D035 KA LZ3 NOKEY

    $38.10 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 NR LF CN D035 MK LZ2 4KEY

    6621 NR LF CN D035 MK LZ2 4KEY

    $40.29 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 NR LF CN D036 LZ3 NOKEY

    6621 NR LF CN D036 LZ3 NOKEY

    $38.31 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/2" 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
    0 keys per lock
    More Details

  • 6621 NR LF CN WCS MK LZ3 NOKEY

    6621 NR LF CN WCS MK LZ3 NOKEY

    $30.42 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
    Custom Marking
    Laser engraved in 3 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 D12 MK LZ4 4KEY

    6621 D12 MK LZ4 4KEY

    $38.82 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Kwikset
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 NR LJ D045 LZ4

    6621 NR LJ D045 LZ4

    $36.03 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    Not Included
    More Details

  • 6621 NR D035 KA LZ2 NOKEY

    6621 NR D035 KA LZ2 NOKEY

    $32.65 40% Off

    Function
    Non-Removable Key
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 WCS KA LZ1 NOKEY

    6621 WCS KA LZ1 NOKEY

    $22.58 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    0 keys per lock
    More Details

  • 6621 WCS MK LZ2 NOKEY

    6621 WCS MK LZ2 NOKEY

    $24.97 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 CN D045 3KEY

    6621 CN D045 3KEY

    $33.05 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Schlage C
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
    More Details

  • 6621 WCS5 LZ2 4KEY

    6621 WCS5 LZ2 4KEY

    $25.55 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 2 areas
    Number of Key
    4 keys per lock
    More Details

  • 6621 CN D036 KA 1KEY

    6621 CN D036 KA 1KEY

    $33.70 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Alike
    Custom Marking
    Not Included
    Number of Key
    1 key per lock
    More Details

  • 6621 CN WCS6 3KEY

    6621 CN WCS6 3KEY

    $25.37 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Sash Chain
    Cylinder Type
    Lock Body Only
    Number of Pins
    6 Pins
    Keying
    Not Included
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
    More Details

  • 6621 WCS5 MK LZ1

    6621 WCS5 MK LZ1

    $23.63 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/8" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    Not Included
    More Details

  • 6621 LF CN D035 LZ1 3KEY

    6621 LF CN D035 LZ1 3KEY

    $35.83 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Not Included
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    3 keys per lock
    More Details

  • 6621 LF D03 MK NOKEY

    6621 LF D03 MK NOKEY

    $32.48 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    Not Included
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
    More Details

  • 6621 LF CN D035 KA LZ1 4KEY

    6621 LF CN D035 KA LZ1 4KEY

    $37.90 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 1 area
    Number of Key
    4 keys per lock
    More Details

  • 6621 LF WCS5 KA

    6621 LF WCS5 KA

    $22.70 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Lock Body Only
    Number of Pins
    5 Pins
    Keying
    Keyed Alike
    Custom Marking
    Not Included
    Number of Key
    Not Included
    More Details

  • 6621 NR LJ D036 KA LZ4

    6621 NR LJ D036 KA LZ4

    $37.92 40% Off

    Function
    Non-Removable Key
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    Not Included
    More Details

  • 6621 LF CN D036 KA LZ4 NOKEY

    6621 LF CN D036 KA LZ4 NOKEY

    $40.47 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Keying
    Keyed Alike
    Custom Marking
    Laser engraved in 4 areas
    Number of Key
    0 keys per lock
    More Details

  • 6621 LF CN D035 MK NOKEY

    6621 LF CN D035 MK NOKEY

    $35.15 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    1-1/2" Boron
    Chain
    Sash Chain
    Cylinder Type
    Yale 8
    Number of Pins
    5 Pins
    Custom Marking
    Not Included
    Number of Key
    0 keys per lock
    More Details

  • 6621 LJ D046

    6621 LJ D046

    $31.76 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Schlage C
    Number of Pins
    6 Pins
    Keying
    Not Included
    Custom Marking
    Not Included
    Number of Key
    Not Included
    More Details

  • 6621 LJ D036 KAMK 3KEY

    6621 LJ D036 KAMK 3KEY

    $35.73 40% Off

    Function
    Non-Key Retaining
    Shackle Length
    2-1/2" Boron
    Chain
    Not Included
    Cylinder Type
    Yale 8
    Number of Pins
    6 Pins
    Custom Marking
    Not Included
    Number of Key
    3 keys per lock
    More Details
Showing 16351 - 16400 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