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The Master Lock No. 3KA Laminated Steel Padlocks, Keyed Alike - multiple locks open with the same key - feature a 1-9/16in (40mm) reinforced laminated steel lock body providing extra strength and and a hardened steel shackle for excellent cut resistance. Dual ball bearings locking for maximum pry resistance making it ideal for industrial applications.

  • Keyed Alike to key# 3210 - order multiple locks to open with the same key.
  • Commercial grade padlock features superior protection from drilling and prying.
  • 1-9/16in (40mm) wide laminated steel body for superior strength.
  • 3/4in (19mm) tall, 9/32in (7mm) diameter hardened steel shackle for superior cut resistance.
  • Non-rekeyable, 4-pin W1 cylinder helps prevent picking.
  • Proprietary rustproofing for longer life.


Master Lock Company
Manufacturer Location:
Limited warranty.
California Residents:
WARNING: This product can expose you to chemicals including lead, nickel and/or chrome, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
  • Shackle Clearance: 3/4in.H(19mm)H x 5/8in.W(16mm)

Return Policy

If an item is returnable (See restocking list), you must first call or use form below to request a return goods authorization (RGA) prior to returning any items purchased through us.

We will not accept any returns without an RGA. All items must be returned in "Re-Saleable Condition", in original packaging with all parts included. Customer is responsible for shipping charges.

Our restocking policies vary, depending on manufacturer and item.

Click here for our restocking fee schedule. Please call or email us with any other questions you may have on returns.

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Master Lock Laminated Steel Padlocks

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