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Custom Features- Master Keyed & Engraving

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Master Lock 387 King Pin Lock

Master Lock 387 King Pin Lock

MPN: 387KA
by Master Lock
$ 123.46

When will my padlocks be delivered?

Choose "Alike-my key code" to order padlocks that match a compatible key code you already own from the same manufacturer.

This option is typically made to order with average lead times of 1-3 weeks, see "When will my padlocks be delivered?" for more details.

Notify me when back in stock

Master Lock 387 king pin lock secures the king pin of semi-trailers, RVs and other fifth wheel trailers to prevent theft and deter break-in's. The 387 king pin lock is equipped with a Master Lock No 5 padlock

Master Lock 387 King Pin Lock Features

  • High grade aluminum is lightweight while providing high security
  • High visibility red body and durable flag alert drivers that lock is attached
  • Includes an integrated No 5. lock with all of its security and keying flexibility
  • available keyed alike 387KA or keyed differently
  • 2 keys included

Common Questions

Can I order multiple padlocks that all open with the same key?
Yes. Padlocks that can be opened with the same key are called Keyed Alike (KA)

Can I order new padlocks keyed alike to match a padlock key code I already have?
Yes. We can supply Master Lock, American Lock, ABUS, PACLOCK, and Enforcer padlocks keyed to a specific key code. Some restrictions may apply.

What are keyed differently (KD) padlocks?
A group of Keyed Differently (KD) padlocks will have randomly selected key codes for each lock so that the key from one lock will not open other locks in the group. The number of key differs depends on the the number of pins in the cylinder. The only way to guarantee that there will be no duplicate keys in a group of padlocks is to request that the padlocks be registered (not available for all padlock models).

What are master keyed (MK) padlocks?
A master key (MK) is a unique key that will open all padlocks in a group of padlocks. A group of padlocks that open with a master key is called a master key system. Master keying is not the same as keyed alike. This is a common misconception. See keyed alike above. REQUEST A QUOTE for master keyed padlocks.

More Information on KEYING OPTIONS...

Can padlocks be ordered with custom engraving?
Yes. Custom Engraving is available on most ABUS, Master Lock, American Lock and PACLOCK aluminum, brass, stainless steel and ProSeries® padlocks. Minimum order quantities may apply. REQUEST A QUOTE for custom engraved padlocks.

More Answers to COMMON QUESTIONS...


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