Master Lock 770LHC 2-7/8 in. Rekeyable 6-Pin Tumbler Padlock

The Master Lock 770LHC is a Pro Series high-security combination consisting of the Model 770 hardened steel hasp and the Model 6271 reinforced die cast hidden shackle padlock. Engineered for commercial and industrial applications, this system delivers maximum resistance against forced entry, making it an ideal solution for van doors, trailers, cargo trucks, security gates, and vending machines.

The 6271 hidden shackle padlock features a 2-7/8in (73mm) wide reinforced die cast body that fully conceals the shackle, eliminating the exposed hardware that bolt cutters and pry bars typically target. The stepped-back design integrates seamlessly with the 770 hasp shroud to create a unified barrier against drilling, sawing, and crowbar attacks.

At the heart of the lock is a rekeyable 6-pin W7000 cylinder with pick-proof spool pins, delivering superior resistance to picking and unauthorized key duplication. The cylinder can be rekeyed to match existing key systems, making it highly practical for fleet operators and facility managers.

Key Features:

• Combination includes: Master Lock 770 hasp + 6271 hidden shackle padlock
• 2-7/8in (73mm) wide reinforced die cast lock body
• Hidden shackle design protects against prying, cutting, and crowbar attacks
• Rekeyable 6-pin W7000 cylinder with pick-proof spool pins
• Hardened solid steel 770 hasp — 9-1/16in (230mm) long x 4-1/2in (114mm) wide
• Hasp mounts with six 3/8in carriage bolts, washers, and nuts (hardware not included)
• Available keyed differently (KD), keyed alike (KA), master keyed (MK), or zero-bitted (KZ)
• Compatible keyways: Master Lock W6000 and American Lock W600A / W700A
• Replaces Master Lock 6270 and American Lock A801LHC / A802LHC
• Designed for severe-use commercial and industrial environments

The Master Lock 770LHC Pro Series hasp and padlock system provides a layered, high-security solution where both components work together to deny access at every attack point. Two keys are included per padlock.