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Gold brass rectangular combination padlock with four bottom dials and boron alloy shackle

Master Lock

Master Lock 1177 Combination Padlock 1 15/16in Rectangular

SKU CH-7W2Q-HQZ3D

Resettable four-dial combination padlock with a boron-alloy shackle for utility meters, substations, cable boxes, construction sites and business gates

  • TypeMechanical Push Button
  • 4-dial resettable combination lets you set your own code without keys
  • 1-15/16 in brass body resists corrosion for outdoor use
  • 3/8 in boron alloy shackle resists cutting and sawing
  • 1-1/16 in shackle clearance fits utility meters and gate hasps
  • Mechanical push-button design needs no batteries or electronics

Mechanical push-button padlock

The Master Lock 1177 is a resettable combination padlock built with a solid brass body and a boron-alloy shackle. Four dials on the bottom face let the user set a personal code without tools. The lock is intended for utility meters, substations, cable boxes, construction sites, equipment yards, storefront gates and business gates where key control is not required.

Resettable four-dial code

Because the combination is user-resettable, authorised personnel can change the code whenever access lists change, removing the need to re-key or replace cylinders. A single bumper protects the dial mechanism from impact and weather. No control key registration is needed, so administration stays simple for sites that manage many locks.

Mechanical limits

The lock relies entirely on its internal mechanical tumblers; there is no electronic audit trail, remote release or master-key override. If the code is forgotten, the shackle cannot be opened without destructive entry. The 3/8-inch boron-alloy shackle resists cutting but offers no protection against shimming or decoding techniques that target dial-type mechanisms.

Highlights

  • 4-dial resettable combination lets you set your own code without keys
  • 1-15/16 in brass body resists corrosion for outdoor use
  • 3/8 in boron alloy shackle resists cutting and sawing
  • 1-1/16 in shackle clearance fits utility meters and gate hasps
  • Mechanical push-button design needs no batteries or electronics

Specifications

BrandMaster Lock
TypeMechanical Push Button

Questions about this item

Will the 4-dial combination mechanism ever need lubrication or parts replacement?

The mechanical push-button dials are built for long-term use without scheduled lubrication; no internal components are user-serviceable.

What stops the 3/8 in boron-alloy shackle from being the weak point during a sustained attack?

The boron-alloy shackle resists cutting and sawing, while the solid brass body absorbs impact, so the shackle is not the first failure point.

Does the brass body heat up or bind when the lock stays outdoors all day?

Brass resists corrosion and thermal expansion, so the body stays functional across temperature swings without binding or excess heat buildup.

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