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Blue thermoplastic lockout padlock with steel shackle and two keys

Master Lock

Master Lock 410KAS3BLU Lockout Padlock Blue

SKU CH-0FJZ-X93KX

A blue thermoplastic lockout padlock with a 13/16 in horizontal shackle clearance, keyed alike and supplied with two keys and labels

  • Product typeMechanical Push Button
  • Keyed alike for efficient multi-point lockout
  • Thermoplastic body resists chemicals and corrosion
  • Steel shackle provides cut-resistant strength
  • Non-removable key prevents accidental unlocking
  • Includes two keys and labels for immediate use

Lockout Padlock for Safety Procedures

The Master Lock 410KAS3BLU is a thermoplastic lockout padlock designed for energy isolation during maintenance. Its blue body and keyed-alike cylinder allow teams to standardise one key across multiple points. The non-removable key prevents accidental unlocking while the shackle is open. Chemical-resistant construction suits industrial environments where solvents or oils are present.

Verify Key System and Shackle Fit

Confirm that your existing lockout stations use the same keyed-alike code so a single key operates every padlock. Measure the hasp or lockout point to ensure the 13/16 in horizontal and 1 1/2 in vertical shackle clearances engage fully. Check that the 1/4 in shackle diameter matches the hole size on your lockout devices. Ensure the 3/4 in body thickness clears adjacent hardware when installed.

Thermoplastic Body Resists Heat and Chemicals

The non-metallic body stays cooler to the touch than steel equivalents in high-temperature areas. Chemical resistance protects the lock mechanism from degradation caused by cleaning agents or process fluids. No electronic components mean zero power draw and silent operation. The steel shackle provides cut resistance while the thermoplastic shell insulates against incidental electrical contact.

How it compares

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

Price $43.99
Cheaper than about 55% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMaster Lock
Product typeMechanical Push Button

Questions about this item

What comes in the package with the Master Lock 410KAS3BLU padlock, and is anything else needed to use it?

The package includes the padlock, two keys and a label; no separate items are required for basic lockout use.

Should I choose this keyed-alike version or a different keying option for my lockout set?

Choose this keyed-alike model when every padlock in the group must open with the same key; select a keyed-different version if each lock needs its own unique key.

What does the 1 1/2 inch shackle clearance mean when the lock is on a hasp or valve?

It provides 1 1/2 inches of vertical space and 13/16 inch of horizontal space between the shackle and body, fitting standard lockout hasps and valve handles.

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