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Weather-Resistant Extra-Clearance Padlocks

Secure equipment with oversized hasps or thick chains outdoors. These padlocks have a shackle that's longer than typical padlocks. Made from materials that resist corrosion from rain and snow, they’ll operate smoothly even when exposed to the elements. They have a pin-tumbler key locking mechanism, which is the most difficult locking mechanism to pick. The more pins the lock has, the harder it is to force open. Choose these padlocks if you need locks that each open with a different key. All have random key numbers.
Steel-body locks are stronger and hold up better against break-in attempts than brass-body locks.
Hardened steel shackles are stronger than stainless steel and brass shackles.
Style A padlocks have a keyhole cover to block rain, snow, and other outdoor elements from entering the key cylinder. For added protection in harsh outdoor environments, they’re enclosed in a plastic cover that protects the lock body. The cover also prevents them from scuffing or denting nearby surfaces.
For technical drawings and 3-D models, click on a part number.


Shackle | Body | Cover | Each | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Manufacturer and Model No. | Color | Material | No. of Keys Included | Keyhole Cover Material | No. of Tumbler Pins | 1-5 | 6-Up | |
Laminated Steel Body | ||||||||||||||||
A | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Master Lock Pro 6121 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 000000 | 000000 |
A | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Master Lock Pro 6125 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 00000 | 00000 |
A | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Master Lock Pro 6127 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 00000 | 00000 |
A | 2 1/2" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Master Lock Pro 6121 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 00000 | 00000 |
Weather- and Cut-Resistant Padlocks

The partially concealed shackle on these padlocks means more security for your outdoor equipment and gates than a traditional padlock. Since most of the shackle is covered, it's difficult to access and cut. For durability outdoors, they’re made from materials that resist corrosion from rain and snow.
These padlocks have a pin-tumbler key locking mechanism, which is the most difficult locking mechanism to pick. The more pins the lock has, the harder it is to force open. Choose these padlocks if you need locks that each open with a different key. All have random key numbers.
Style C padlocks have a dual-locking shackle, so they prevent attempts to force them open from prying, shimming, or tapping because both ends of the shackle lock inside the body.
Steel-body locks are stronger and hold up better against break-in attempts than brass-body locks. They are also covered in plastic to prevent them from scuffing or denting nearby surfaces.
Hardened boron alloy shackles are the hardest and most cut-resistant shackle material. They also hold up against corrosion better than hardened steel shackles.
Padlocks with a keyhole cover keep out water and debris to protect the cylinder from freezing, corroding, and jamming.
For technical drawings and 3-D models, click on a part number.


Shackle | Cover | Each | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Manufacturer and Model No. | Color | Material | No. of Keys Included | Keyhole Cover Material | No. of Tumbler Pins | 1-5 | 6-Up | |
Laminated Steel Body | ||||||||||||||||
C | 3/4" | 7/8" | 5/16" | Hardened Boron Alloy | 2 5/16" | 2 1/8" | 1 1/2" | Master Lock Pro 6321 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 000000 | 000000 |
C | 3/4" | 7/8" | 3/8" | Hardened Boron Alloy | 2 5/16" | 2 3/8" | 1 1/2" | Master Lock Pro 6325 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 00000 | 00000 |
C | 3/4" | 7/8" | 7/16" | Hardened Boron Alloy | 2 5/16" | 2 5/8" | 1 1/2" | Master Lock Pro 6327 | Black | Plastic | 2 | Plastic | 5 | 00000000 | 00000 | 00000 |
Weather-Resistant Extra-Clearance Keyed Alike Padlocks

Secure items with large hasps or thick chains outdoors. These padlocks have a longer shackle than typical padlocks. Use them around your facility, both indoors and out, to prevent theft and unauthorized access. All have a pin-tumbler key locking mechanism, which is the most difficult locking mechanism to pick. The more pins a lock has, the harder it is to pick.
Choose these locks if you need several locks that open with the same key. If the lock or key with the key number you want isn’t listed, order the "Other Key Numbers" and specify your desired key number.
Steel-body locks are strong, and they’re less likely to deform from break-in attempts than brass-body locks.
Locks with a cover have extra protection against weather and impact. They’re a reliable choice for securing equipment, such as valves, in harsh outdoor environments. Those with a plastic cover shield the key cylinder from water and debris. The plastic won’t scrape nearby surfaces.
Hardened steel shackles are stronger than stainless steel shackles, but they don’t stand up as well to corrosion.
For technical drawings and 3-D models, click on a part number.


Padlocks | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shackle | Body | Cover | Each | Additional Keys | |||||||||||||
Style | Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Color | Material | No. of Keys Included | No. of Tumbler Pins | Key No. | 1-5 | 6-Up | Each | ||
Standard Shackle Style | |||||||||||||||||
Master Lock Pro 6121 | |||||||||||||||||
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G012 | 000000000 | 000000 | 000000 | 000000000 | 000000 |
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G013 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G100 | 00000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G101 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G102 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 13G809 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 2 1/2" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G012 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 2 1/2" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G100 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 2 1/2" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 13G933 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 2 1/2" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 00000 |
Master Lock Pro 6125 | |||||||||||||||||
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G007 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G056 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G100 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G101 | 00000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G102 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 13G809 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 00000 |
Master Lock Pro 6127 | |||||||||||||||||
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G042 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G052 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G064 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G100 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G101 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G102 | 00000000 | 00000 | 00000 | 000000000 | 00000 |
B | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 00000 |
Weather- and Cut-Resistant Keyed Alike Padlocks

Lock gates and outdoor equipment without worrying about the shackle being cut. These padlocks have raised shoulders that cover most of the shackle, making it difficult to access. Made from materials that resist corrosion from rain and snow, they’ll operate smoothly even when exposed to the elements. Choose them if you need several locks that open with the same key. If the lock or key with the key number you want isn’t listed, order the "Other Key Numbers" and specify your desired key number.
All have a pin-tumbler key locking mechanism, which is harder to pick than padlocks with a disc-tumbler key locking mechanism. The more pins a lock has, the harder it is to pick.
For technical drawings and 3-D models, click on a part number.


Steel-body padlocks are strong, and they’re less likely to deform from break-in attempts than brass-body padlocks. They have a plastic cover to protect the padlock body from weather and impact.
Padlocks with a dual-locking shackle prevent attempts to force them open from prying or shimming because both ends of the shackle lock inside the padlock body.
Boron alloy shackles are the hardest and most cut-resistant shackle material. They also resist corrosion better than hardened steel shackles.
Padlocks | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shackle | Body | Cover | Each | Additional Keys | |||||||||||||
Style | Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Color | Material | No. of Keys Included | No. of Tumbler Pins | Key No. | 1-5 | 6-Up | Each | ||
Dual Locking and Protected Shackle Style | |||||||||||||||||
Master Lock Pro 6321 | |||||||||||||||||
D | 3/4" | 7/8" | 5/16" | Boron Alloy | 2 5/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G034 | 00000000 | 000000 | 000000 | 000000000 | 00000 |
D | 3/4" | 7/8" | 5/16" | Boron Alloy | 2 5/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G103 | 00000000 | 00000 | 00000 | 00000000 | 0000 |
D | 3/4" | 7/8" | 5/16" | Boron Alloy | 2 5/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 13G809 | 00000000 | 00000 | 00000 | 000000000 | 00000 |
D | 3/4" | 7/8" | 5/16" | Boron Alloy | 2 5/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | 14G004 | 00000000 | 00000 | 00000 | 000000000 | 0000 |
D | 3/4" | 7/8" | 5/16" | Boron Alloy | 2 5/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 0000 |
Master Lock Pro 6325 | |||||||||||||||||
D | 3/4" | 7/8" | 3/8" | Boron Alloy | 2 5/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G700 | 00000000 | 00000 | 00000 | 000000000 | 0000 |
D | 3/4" | 7/8" | 3/8" | Boron Alloy | 2 5/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G104 | 00000000 | 00000 | 00000 | 00000000 | 0000 |
D | 3/4" | 7/8" | 3/8" | Boron Alloy | 2 5/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G490 | 00000000 | 00000 | 00000 | 000000000 | 0000 |
D | 3/4" | 7/8" | 3/8" | Boron Alloy | 2 5/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | 14G002 | 00000000 | 00000 | 00000 | 000000000 | 0000 |
D | 3/4" | 7/8" | 3/8" | Boron Alloy | 2 5/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 0000 |
Master Lock Pro 6327 | |||||||||||||||||
D | 3/4" | 7/8" | 7/16" | Boron Alloy | 2 5/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G007 | 00000000 | 00000 | 00000 | 000000000 | 00000 |
D | 3/4" | 7/8" | 7/16" | Boron Alloy | 2 5/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 10G008 | 00000000 | 00000 | 00000 | 000000000 | 0000 |
D | 3/4" | 7/8" | 7/16" | Boron Alloy | 2 5/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | 12G105 | 00000000 | 00000 | 00000 | 00000000 | 0000 |
D | 3/4" | 7/8" | 7/16" | Boron Alloy | 2 5/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | Other Key Numbers | 000000000 | 00000 | 00000 | 000000000 | 0000 |
Weather-Resistant Extra-Clearance Master Keyed Padlocks


Vertical shackle clearance is greater than 1”. Choose these locks if you want individual locks or groups of locks that open with their own key, but also open with a master key. The included keys have random key numbers; master keys are sold separately. Steel-body locks have a plastic cover to provide corrosion resistance.
Hardened steel shackles are stronger than brass shackles.
Pin-tumbler key locking mechanisms are the most difficult locking mechanisms to pick. When choosing between padlocks with four or five pins, the lock with five pins is harder to pick.
For technical drawings and 3-D models, click on a part number.
Padlocks | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shackle | Body | Cover | Master Keys | |||||||||||||
Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Color | Material | No. of Keys Included | No. of Tumbler Pins | Master Key No. | Each | Each | |||
Laminated Steel Body | ||||||||||||||||
Master Lock 6121 | ||||||||||||||||
A | 1 1/8" | 7/8" | 5/16" | Hardened Steel | 2 3/16" | 2 1/8" | 1 1/2" | Black | Plastic | 2 | 5 | SG409 | 00000000 | 000000 | 00000000 | 000000 |
Master Lock 6125 | ||||||||||||||||
A | 1 3/8" | 7/8" | 3/8" | Hardened Steel | 2 3/16" | 2 3/8" | 1 1/2" | Black | Plastic | 2 | 5 | SG410 | 00000000 | 00000 | 00000000 | 00000 |
Master Lock 6127 | ||||||||||||||||
A | 1 3/8" | 7/8" | 7/16" | Hardened Steel | 2 3/16" | 2 5/8" | 1 1/2" | Black | Plastic | 2 | 5 | SG412 | 00000000 | 00000 | 00000000 | 00000 |
Weather- and Cut-Resistant Master Keyed Padlocks


Shackle is concealed to make it difficult to cut. Choose these locks if you want individual locks or groups of locks that open with their own key, but also open with a master key. The included keys have random key numbers; master keys are sold separately.
Steel-body locks have a plastic cover to provide corrosion resistance.
Pin-tumbler key locking mechanisms are the most difficult locking mechanisms to pick. When choosing between padlocks with four or five pins, the lock with five pins is harder to pick.
For technical drawings and 3-D models, click on a part number.
Padlocks | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shackle | Body | Cover | Master Keys | ||||||||||||||
Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Manufacturer and Model No. | Color | Material | No. of Keys Included | No. of Tumbler Pins | Master Key No. | Each | Each | |||
Laminated Steel Body | |||||||||||||||||
B | 3/4" | 7/8" | 5/16" | Hardened Steel | 2 5/16" | 2 1/8" | 1 1/2" | Master Lock Pro 6321 | Black | Plastic | 2 | 5 | SG414 | 00000000 | 000000 | 00000000 | 00000 |
B | 3/4" | 7/8" | 3/8" | Hardened Steel | 2 5/16" | 2 3/8" | 1 1/2" | Master Lock Pro 6325 | Black | Plastic | 2 | 5 | SG423 | 00000000 | 00000 | 00000000 | 0000 |
B | 3/4" | 7/8" | 7/16" | Hardened Steel | 2 5/16" | 2 5/8" | 1 1/2" | Master Lock Pro 6327 | Black | Plastic | 2 | 5 | SG424 | 00000000 | 00000 | 00000000 | 0000 |
Weather-Resistant Extra-Clearance Resettable Combination Padlocks



Fit the extra-long shackle on these padlocks over large hasps or chains to secure equipment outdoors. They’re made from materials that resist corrosion caused by rain and snow. Set your own combination and change it at any time.
Padlocks with a dual-locking shackle prevent attempts to break them open from prying, shimming, or tapping because both ends of the shackle lock inside the body. Those with an octagonal shackle are harder to cut than those with a round shackle.
Brass-body locks are the most corrosion resistant.
Stainless steel shackles resist corrosion better than hardened steel. Boron carbide shackles are the hardest and most cut-resistant shackle material. They also resist corrosion better than hardened steel shackles.
Style B padlocks have a plastic cover to protect the rolling digits from freezing, corroding, or jamming caused by rain and debris.
Shackle | Body | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Manufacturer and Model No. | Combination Type | No. of Possible Combinations | Features | Each | |
Dual-Locking Shackle Style | |||||||||||||
Solid Brass Body | |||||||||||||
A | 2 1/16" | 1" | 5/16" | Stainless Steel | 2 1/4" | 2" | 1" | Pro Master Lock 175LHSS | Four Numbers | 10,000 | __ | 00000000 | 000000 |
B | 2 1/16" | 15/16" | 3/8" | Boron Carbide | 2" | 2 1/4" | 1 1/4" | Pro Master Lock 1175LH | Four Numbers | 10,000 | Octagonal Shackle | 0000000 | 00000 |
B | 2 1/16" | 15/16" | 3/8" | Boron Carbide | 2" | 2 1/4" | 1 1/4" | Pro Master Lock 1175LHRS | Four Numbers | 10,000 | __ | 0000000 | 00000 |
Weather- and Cut-Resistant Resettable Combination Padlocks


Shoulders cover most of the shackle, making it difficult to access and cut. These padlocks resist corrosion for outdoor use. Set your own combination and change it at any time.
Brass-body locks are more corrosion resistant than hardened steel-body locks. They also have a boron carbide shackle, which is harder and more corrosion resistant than a hardened steel shackle.
For technical drawings and 3-D models, click on a part number.
Shackle | Body | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Vertical Clearance | Horizontal Clearance | Dia. | Material | Ht. | Wd. | Thick. | Manufacturer and Model No. | Manufacturer Series | Combination Type | No. of Possible Combinations | Each | ||
Solid Brass Body | |||||||||||||
A | 1 1/16" | 15/16" | 3/8" | Boron Carbide | 2" | 2 1/4" | 1 1/4" | Master Lock 1177 | Pro | Four Numbers | 10,000 | 0000000 | 000000 |