Description

Proven Industries Medium Duty Padlock

Proven Industries Medium Duty Padlock body is precision CNC machined in the USA from a custom extruded bar of aircraft grade 6061 aluminum. Resistant to corrosive environments and are available in a blue or black anodized finish. This medium duty padlock features a 5/16" (8mm) chrome plated shackle.

Proven Industries anti-shim technology consists of a custom stainless steel cam with dual stainless steel balls.

Patent pending design
5/16" (8mm) chrome plated hardened steel shackle
6061 solid aluminum lock body
7 pin tubular cylinder
Corrosion resistant
2 keys per lock

Fine Print

*Please note, product pictures may not represent current model, as products are revised. All locks are now upgraded to 7 pin tubular lock at no additional cost.

Lock Core

Cobra (Standard)

The Cobra is a patented key system that was developed for the high-security needs in the vending industries. The Cobra tubular keyway is like no other with its tubular keyway, this unique feature stops anyone from going to a hardware store to copy your key. This product offers a high-security solution for those that are looking for excellent exterior performance. Cobra comes standard in all of our products at no additional cost.

Application

The Cobra system is geared for the business owner looking for a great performing lock system at an affordable price with key control.

Proven Disc-Detainer (Upgrade Option)

The Proven Disc Detainer Lock was developed for high-security situations where minimum maintenance is not possible. This particular lock is virtually impossible to pick due to its rotating disk and requires special lock picks and skills needed in order to pick.

Application

Disc detainer locks are not all that common in everyday use. Mainly this style of lock is reserved for high-end locks. These lock perform well in extreme weather conditions with minimum if any maintenance.

Medeco M3 (Available upon request, for additional cost)

Medeco comes as one of the oldest High-security lock manufacturers in the USA. You will find this high-security lock in most prisons, government facilities, and even the White House! This particular lock is virtually impossible to pick due to its rotating pins that not only need to be at the right height but the right rotation in order to unlock.

Application

Medeco is typically needed for the high-security needs of companies that need key control or grandmaster key solutions. All parts are machined out of brass and hardened steel, for the combination of great exterior performance and high-security needs.

Abloy (Available upon request, for additional cost)

Abloy cylinders provide high-security protection by using a unique rotating disc mechanism. Unlike standard locks, they are virtually unpickable, bump-proof, and designed to withstand harsh road conditions and outdoor environments without jamming.

*Medeco and Abloy is available upon request for an additional fee. Please call customer support for additional information.

Price

Collections

Best Padlock for Trailers, Sheds, and Storage: Our 2026 Picks

Medium Duty Padlock-5/16" (8mm) Shackle