Master Lock MLS3KALH-0851 Laminated Padlock NonRekeyable 4-Pin W1 Cylinder

The Master Lock MLS3KALH-0851 is a 3KALH-0851 laminated padlock, non-rekeyable, with a 4-pin W1 cylinder.

The 4-pin W1 cylinder is the specification and it is worth being straight about what it means. Pin count is one measure of a cylinder's resistance to picking and to key duplication — more pins means more combinations and more work to defeat. Four pins is a modest count, which places this in the general-purpose rather than high-security tier.

That is not a criticism. Most padlocks are not defeated by picking; they are defeated by bolt cutters, by an angle grinder, or by unscrewing the hasp they hang from. A four-pin cylinder is entirely adequate for deterrence and for keeping honest people honest, which is what the overwhelming majority of padlocks are actually for. Anyone whose threat model includes a determined attacker with tools needs a different product and a different hasp.

W1 is the keyway designation, and it matters for compatibility: keys and cylinders are keyway-specific.

Non-rekeyable means the cylinder cannot be changed. When a key goes missing, the lock gets replaced.

The 0851 key number identifies the keyed-alike batch. Order the same number to match existing locks.

LH indicates the long shackle version.

Applications include gates, chains, and general site security.

Brand

Master Lock

SKU

MLS3KALH0851

Category

Safety Products

Weight

1 lbs

Dimensions

3.50 x 1.75 x 1.25

Price

$19.95

Availability

In stock

Rating

4.54 / 5.0