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Black laminated rectangular padlock with boron shackle and five-pin cylinder

Master Lock

Master Lock BumpStop Padlock 13/16/6000

SKU CH-CPY7-SZ0J4

A high-security padlock with a boron-alloy shackle, laminated steel body and five-pin cylinder that resists bumping and weather

  • Product typeBumpStop
  • BumpStop cylinder resists bump-key attacks with 5-pin design
  • Hardened boron-alloy shackle withstands cutting and prying attempts
  • Laminated steel body provides layered strength against forced entry
  • Weather-resistant construction performs reliably in outdoor environments
  • Rekeyable mechanism allows cylinder changes without replacing entire lock

BumpStop security for doors

The Master Lock BumpStop padlock uses a five‑pin cylinder with the Master K6000 keyway to resist bumping and picking. Its laminated steel body and boron‑alloy shackle provide high‑security resistance to cutting and prying. The lock is weather resistant and comes keyed different for individual access control.

Rekeyable cylinder changes access without new

Because the core is rekeyable, a locksmith can alter the key combination while the padlock stays in place. This avoids the cost and effort of replacing the entire unit when keys are lost or personnel change. No interchangeable core is fitted, so rekeying requires standard locksmith tools rather than a control key.

Suits gates, sheds and storage units needing pick

Buyers who want a single padlock that can be rekeyed on site will benefit from the BumpStop design. Those who need a master‑keyed system or an interchangeable core for rapid cylinder swaps should look at a different model.

How it compares

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

Price $21.99
Cheaper than about 68% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMaster Lock
Product typeBumpStop

Questions about this item

How often should the 5-pin cylinder be lubricated to keep the BumpStop mechanism working smoothly?

Apply a light PTFE or graphite lubricant into the keyway every six to twelve months; the laminated steel body and boron shackle need no internal maintenance.

Which part reaches its limit first when the padlock is left outdoors year-round?

The black laminated finish on the steel body will show surface oxidation before the boron shackle or the 5-pin cylinder degrade.

Does the shackle or body get hot enough to burn fingers after a day in direct sun?

The steel body and boron shackle absorb heat in full sun but stay at ambient temperature; no component generates its own heat.

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