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
Gold brass rectangular padlock with steel shackle

Master Lock

Master Lock Brass Padlock Key No. 2525

SKU CH-7EAY-78JB1

Solid brass padlock with a 4-pin cylinder keyed alike to number 2525 for weather-resistant security

  • Product typeBrass
  • Solid brass body resists corrosion for outdoor use
  • Hardened steel shackle withstands cutting attempts
  • Four-pin cylinder provides pick-resistant security
  • Keyed alike to number 2525 for convenient access
  • Weather-resistant construction performs in harsh conditions

Brass Body Padlock for Key No. 2525

This Master Lock padlock uses a laminated brass body and a steel shackle to resist weather and tampering. The four-pin cylinder operates with Key No. 2525 on the Master K6000 keyway. It is a non-rekeyable unit suited for gates, sheds or storage units where a single key number is required.

Laminated Brass Construction and Steel Shackle

The 16 mm shackle diameter and 32 mm vertical clearance accept standard hasps and chain links. A silver laminated finish on the brass body adds corrosion resistance for outdoor exposure. The 4 mm body thickness and rectangular shape fit typical staple plates without modification.

Replaces Rekeyable or Lower-Security Padlocks

Choose this model when a fixed key code simplifies key management across multiple locks. It is not for users who need to change cylinders or match an existing master-key system. The jump is worth it when weather resistance and a hardened shackle outweigh the flexibility of rekeyable designs.

How it compares

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

Price $15.99
Cheaper than about 77% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMaster Lock
Product typeBrass

Questions about this item

What keyway standard does the Master K6000 keyway use, and what does it limit?

The Master K6000 keyway restricts the lock to Master Lock keys cut to that specific keyway profile, preventing use of other key blanks.

What are the shackle dimensions and body thickness needed for the hasp or chain link?

The shackle is 9/32 in diameter, 2 in tall, and 5/8 in wide; the brass body is 3/4 in thick, so the mounting hole must clear the shackle and the body must fit the staple.

How do I install this padlock, and what is the common mistake with the key-alike feature?

Insert the shackle through the hasp and press down until it clicks; the error is assuming any Master Lock key works — only keys cut to No. 2525 will open this lock.

More in Door Lock Sets & Deadbolts

Similar items