Construction Locks

DoubleLock USA's

Mammoth Lock Budle –

Jobsite Lock | Heavy Chain Lock

The Mammoth Heavy Chain & Padlock Bundle offers robust security for demanding environments. Featuring an 3.5 ft steel chain with thick links (3 x 1.75in) that resist cutting and sawing, paired with a high-shoulder shackle padlock equipped with a hardened body and five laser-cut keys, it ensures superior durability and key control. Trust the Mammoth to provide reliable, expert-grade security when it matters most.

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Beast Cable Lock –

Cable & U-Lock Combo

The Beast Cable 300 & Shackle Lock Combo is designed for ultimate security and strength, ideal for securing high-value equipment in both commercial and jobsite settings. With a 300 cm (9.8 feet) ultra-thick cable and an ART-Approved U-Lock with Large Bracket.

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Tiger Shark Cable Lock –

Cable & U-Lock Combo

The Tiger-Shark Cable and U-Lock bundle combines a 5-meter (~16 ft) long, 10mm thick steel cable with a durable vinyl coating to protect your gear. The shackle lock ensures strong security. Designed for securing multiple items or oversized equipment, it’s perfect for trailers, power tools, fences, and job boxes.

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Red Hawk Padlock –

High-Shoulder Shackle Padlock

The Red Hawk Shackle Lock Padlock sets the benchmark for heavy-duty security. Engineered to resist cutting, drilling, and corrosion, it delivers unmatched protection in demanding environments. Its compatibile with steel cables, chains, and provides versatile security solutions for jobsites and construction equipment. Equipped with five laser-cut precision keys, it ensures reliable access control for teams.

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Spider Scaffold Lock –

Scaffold Lock | Construction Lock

Spider is a robust scaffold lock designed for rapid, secure attachment of mobile scaffolding components. It connects two surface-mounted frames and two horizontal struts in seconds, ensuring stable, tamper-resistant security. Compatible with standard (2.75") padlocks, it offers versatile locking options. Its durable construction withstands harsh jobsite conditions, vibration, and exposure, making it ideal for multi-story and temporary scaffolding projects. Quick to install and OSHA-compliant.

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Ox Container Lock –

Fence Lock | Container Lock

The DoubleLock USA Ox Jr. Container Lock is a lighter version of our our robust series. Specialized spring-tension lock designed to secure vertical bars on containers and similar enclosures. Its built-in spring mechanism ensures a tight, tamper-resistant grip that locks bars firmly together. Includes DoubleLock USA Crab Discus Lock crafted from hardened materials and equipped with five precision-cut keys, this system offers robust defense against cutting, prying, and bolt attacks.

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VERSATILE

APPLICATIONS

DoubleLock USA manufactures the best construction locks and jobsite padlocks for both heavy-duty commercial sites and tough outdoor environments. Built with hardened steel and premium components, our corrosion-resistant jobsite locks and equipment padlocks withstand rain, dust, mud, extreme temperatures, and constant abuse while delivering maximum security for tools, trailers, generators, and gear.

TRUSTED

PROTECTION

Protect your jobsite and equipment with DoubleLock USA's heavy-duty construction padlocks and jobsite locks. These premium hardened steel locks fight bolt cutters, prying, and theft alike, giving contractors and site managers reliable protection season after season. Shop our full line of construction security products today.

Secure your jobsite investments with DoubleLock USA's trusted solutions. Explore our full range of jobsite security products and experience the confidence that comes with superior protection.

Jobsite Security

Crab Discus Lock –

Jobsite Lock

The DoubleLock USA Crab 2.0 | Including 5 keys a Discus Lock engineered for superior security, making it an essential tool for protecting your valuable assets. With its robust design and versatile applications, this lock ensures peace of mind wherever you use it. Secure and Durable Construction Crafted from hardened steel, the Crab Discus Lock resists cutting, prying, and tampering, providing a formidable barrier against theft. Its unique discus shape minimizes vulnerable points, enhancing overall security. Versatile Applications Perfect for securing containers, steel cables, and chains, the Crab Discus Lock is ideal for various applications. Whether you need to secure trailers, gates, lockers, or outdoor equipment. Weather-Resistant Design Designed to withstand the elements, this lock features a weather-resistant keyway that protects the internal components from dirt, moisture, and corrosion, ensuring reliable performance in all conditions. Convenient Key Access The lock includes five precision-cut keys, providing convenient access and ensuring you have multiple backups for added peace of mind.

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Sturdy Lock with Extra Long Cable

The TIGER-SHARK Extra Long Cable & Lock Bundle | U-Lock and Long Steel Cable is very useful for securing my bike in public where the cable winds throughout the entire frame and both front and back wheels ensuring that I don't come back to a partially missing way to get home. In addition, when I go out of town, I transfer the Tiger-Shark to my skiff in the back yard to keep it secure to my dock so that it doesn't play on the lake without me (it's happened before). My only concern is that I need to be extra careful that I don't drop the U into the water as it is not directly connected to the locking mechanism. Very happy with your lock and will purchase another. Thanks!

Great feature is programmable 3 digit code!Cable set is light weight

My favorite part about this cable / lock set is that you can change it to whatever 3 digit code you like and it’s easy to do! Another pro is the length of the cable as it has a good length which allows it to easily wrap around a bikes frame, rims and a stationary object ( light pole, bike rack, fence etc). Where I’d say it’s falls short is that the cable is very thin and could easily be clipped with a bolt cutter. To me this is better then not having any lock but doesn’t appear too hard to circumvent. Another possible weak spot is the end of the cable where it clicks into the combination part. It’s sort of coated in plastic and seems like if the plastic broke or say were melted the cable would just unlatch? Not 100% sure about this though. Over all light weight, doesn’t take up too much room in a bike bag and you can have peace of mind for a few mins if you wanted to run into a Deli to get a drink or snack.

Hefty and solid

I don’t have any doubt that this lock set will keep things secure. Well build and the finish looks great. Durable metal materials and a disc lock included.

The Hammerhead Doublelock system is a great product

The Hammerhead Doublelock system is a great product. It is a simple, easy-to-use security device. It can be used to lock any vehicle that has wheel hole spacing to allow the deterrent stick rod to pass through the spacing in the wheel. One must check the clearance between the wheel and the brakes. Rod is approximately 3/4" round. This locking system allows one to secure their vehicle in an area where one is hesitant to park. It could also be used on garden equipment like a brush chipper to keep it from dissappearing. This makes it useful for locking up all kinds of other portable equipment such as trailers, boats, ebikes and other outdoor equipment which cannot be secured inside a building.

It would be better to show the size more

It would be better to show the size more.

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