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Three silver rectangular steel padlocks with long shackles side by side

Master Lock

Master Lock Commercial Combo Pack Padlock KA 4 Pin Steel PK3

SKU CH-ZWWS-VV8X7

Three steel padlocks keyed alike with 4-pin cylinders and 2-1/2 inch hardened shackles

  • Product typeCommercial Combo Pack
  • Keyed-alike convenience opens all three locks with one key
  • Four-pin cylinder adds pick resistance for commercial security
  • Steel body and shackle resist cutting and forced entry
  • Long 2-1/2 in shackle fits hasps and thick chain links
  • Laminated silver finish protects against everyday wear

Commercial Combo Pack Padlocks

This pack contains three keyed-alike steel padlocks designed for commercial environments where multiple access points share one key. Each lock uses a four-pin cylinder and a long steel shackle for standard security needs. Buyers who require high-security ratings, weather resistance or rekeyable cylinders will not find those features here.

Build integration and clearance

The laminated steel body measures 1 5/16 in high, 1 3/4 in wide and 7/8 in thick, while the shackle offers 2 1/2 in clearance with a 5/16 in diameter and 3/4 in internal width. One bumper protects the body finish during use. The long shackle fits standard hasps and chains without needing extra links or adapters.

Upgrade path and when to switch

These padlocks replace individual keyed-different locks when key management becomes cumbersome. The jump is worthwhile when consolidating access for storage units, gates or tool cribs under a single Master K1 keyway. They do not serve as an upgrade from high-security or interchangeable-core systems.

How it compares

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

Price $22.99
Cheaper than about 68% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMaster Lock
Product typeCommercial Combo Pack

Questions about this item

Will the 4-pin cylinder resist picking during sustained daily use?

The 4-pin Master K1 keyway provides standard commercial security; it is not rated as high-security or pick-resistant.

Does the steel body or laminated finish show heat or corrosion after all-day outdoor exposure?

The steel body with laminated finish has no weather-resistant rating, so moisture and temperature cycles can cause surface rust over time.

Must I already own a Master K1 control key to operate these three keyed-alike padlocks?

No control key is required; the pack includes two cut keys that operate all three padlocks immediately.

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