We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in

Master Lock

Master Lock 4140KA-2341 keyed alike padlock brass 4 pin

SKU CH-YKBA-A51RD

Solid brass body with a hardened steel shackle, keyed alike to number 2341 for single-key convenience across multiple locks

  • TypeMechanical Push Button
  • Keyed alike to 2341 for single-key convenience
  • Solid brass body resists corrosion outdoors
  • Hardened steel shackle resists cutting attacks
  • Four-pin cylinder provides basic pick resistance
  • Compact rectangular shape fits tight hasps

Brass padlock for keyed-alike access

The Master Lock 4140KA-2341 is a brass-bodied padlock with a 4-pin cylinder that opens with key number 2341. It is built for users who need several locks operated by a single key. The rectangular body measures 2 7/64 in high by 1 1/2 in wide with a 1/2 in thickness. A hardened steel shackle resists cutting and sawing.

Weather-resistant construction

The solid brass body and steel shackle are rated weather resistant for outdoor use. No batteries or electronics are present, so the lock operates silently and draws no power. The standard shackle provides 13/16 in of vertical and horizontal clearance. There are no bumpers or interchangeable cores to maintain.

Supplied key 2341 enables immediate keyed-alike sets

Each lock ships with the matching key number 2341, allowing multiple units to work from the same key without rekeying. The cylinder is not rekeyable and does not accept a control key. Registration is not required. Buyers who need unique key codes per lock or a master-key hierarchy cannot use this model.

Highlights

  • Keyed alike to 2341 for single-key convenience
  • Solid brass body resists corrosion outdoors
  • Hardened steel shackle resists cutting attacks
  • Four-pin cylinder provides basic pick resistance
  • Compact rectangular shape fits tight hasps

Specifications

BrandMaster Lock
TypeMechanical Push Button

Questions about this item

How do I fit the 13/16 in shackle through my hasp, and what step do people miss?

Slide the 1/4 in diameter shackle through the hasp, push the body down until the 4 pin cylinder clicks, then turn key 2341 to lock — the missed step is verifying the shackle fully seats before turning the key.

What part will need replacement first on this brass body padlock?

The 4 pin cylinder or the steel shackle will wear before the solid brass body; neither is user-replaceable, so the whole padlock is swapped when the key action stiffens or the shackle shows deep grooves.

What limit appears first when the lock stays outdoors in constant rain?

The weather resistant brass body resists corrosion, but the steel shackle will develop surface rust before the 4 pin mechanism binds, especially where the 13/16 in clearance traps moisture.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.