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Medeco 54 series shrouded padlock, black body with satin brass cylinder, 5/16 by 3/4 inch shackle

Medeco

Medeco 54-52500-00 54 System Series All Weather Shrouded Shackle Padlock 5/16" x 3/4" door lock

SKU CH-PV51-58NK0 MPN 54-52500-00

All-weather shrouded padlock with boron alloy steel shackle resists cutting and pulling, while hardened stainless steel inserts defend against drilling and vandalism

  • Lock keyingKeyed Different
  • Surface finishStainless Steel
  • Sold asBox
  • UL 437 listed high-security rating resists picking and drilling
  • Shrouded boron alloy shackle protects against cutting and pulling attacks
  • Triple locking action makes the cylinder virtually pick proof
  • All-weather black body cover with satin brass cylinder withstands outdoor exposure
  • Patented 00 Original keyway prevents unauthorised key duplication

Medeco 54 System Series Padlock

The Medeco 54-52500-00 is a high-security padlock built for outdoor exposure and heavy-duty use. Its shrouded shackle design protects the bolt-cutting surface while the boron alloy steel resists pulling attacks. The cylinder uses hardened stainless steel inserts to defend against drilling and vandalism. This lock is suited for gates, storage units and industrial enclosures.

Upgrades from standard exposed-shackle locks

The shrouded body removes the leverage points that allow bolt cutters to grip a conventional shackle. Boron alloy steel adds ductility so the shackle bends rather than snaps under tension. UL 437 listing confirms the cylinder withstands recognised picking and drilling tests. The jump is worth it when the asset value justifies a lock that defeats common forced-entry tools.

For buyers needing pick-resistant outdoor security

The triple-locking action and patented 00 Original keyway suit users who require key control and resistance to manipulation. The black body cover and satin brass cylinder tolerate weather without corrosion. Buyers who need a smaller shackle clearance or a keyed-alike set for multiple locks should look at other models in the range.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $206.99
Pricier than about 83% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMedeco
Model name54-52500-00
Size & build
Surface finishStainless Steel
More details
Lock keyingKeyed Different

Questions about this item

What clearance does the 5/16" x 3/4" shrouded shackle need to fit through a hasp?

The shackle diameter is 5/16 inch and the internal clearance is 3/4 inch, so the hasp hole must be larger than 5/16 inch and the gap at least 3/4 inch wide.

How is the Medeco 54 System cylinder installed into the lock body, and what step is often missed?

The cylinder is factory-fitted inside the stainless steel body; the critical step is ensuring the 00 Original High Security keyway aligns correctly before the retaining screw is tightened.

Which components of the 54-52500-00 will need lubrication or replacement over time?

The brass cylinder internals and baron alloy steel shackle benefit from periodic dry lubricant; the cylinder may require rekeying if keys are lost, but the UL437 listing means no scheduled parts replacement.

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