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MASTER LOCK

Master Lock, founded in 1921 in Milwaukee, Wisconsin, USA, is a manufacturer of security products including padlocks, lockboxes, and locker locks. The company is known for its focus on mechanical and electronic locking mechanisms, with product lines covering combination padlocks, keyed padlocks, Bluetooth-enabled padlocks, and lockboxes. Master Lock products are used in industrial, commercial, and institutional settings for securing equipment, lockers, gates, and storage areas. The brand's portfolio includes standard and long shackle padlocks in materials such as brass, stainless steel, and steel, with shackle options in steel or boron alloy. Combination padlocks are available in dial or scrolling combo formats, with color-coded dials (blue, gold, black) for identification. Bluetooth padlocks offer keyless access via smartphone, with compatibility for access management systems. Lockboxes feature digital combination locks and key capacities up to 5 keys, with vinyl-coated metal construction for weather resistance. Built-in locker locks, such as deadbolt models, are designed for new installations or retrofitting existing systems, with keying options including random keying for new systems or specified keying for existing systems. 3G Electric supplies Master Lock products globally, offering a range of SKUs that include padlocks, lockboxes, and locker locks. The inventory covers standard and long shackle combination padlocks, Bluetooth padlocks, key-controlled scrolling combination padlocks, and lockboxes with digital combination locks. Specifications such as shackle length, body material, lock style, and key capacity are provided to assist engineers and procurement specialists in selecting appropriate products for specific security requirements. Master Lock products are designed to meet common industry standards for durability and security, with materials and construction suitable for indoor and outdoor use. The brand's long history in security products provides a baseline for reliability, though specific certifications or ratings should be verified against product datasheets. 3G Electric's catalog allows comparison of specifications across models, enabling buyers to match lock features to application needs without reliance on marketing claims.

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About MASTER LOCK

Master Lock, founded in 1921 in Milwaukee, Wisconsin, USA, is a manufacturer of security products including padlocks, lockboxes, and locker locks. The company is known for its focus on mechanical and electronic locking mechanisms, with product lines covering combination padlocks, keyed padlocks, Bluetooth-enabled padlocks, and lockboxes. Master Lock products are used in industrial, commercial, and institutional settings for securing equipment, lockers, gates, and storage areas. The brand's portfolio includes standard and long shackle padlocks in materials such as brass, stainless steel, and steel, with shackle options in steel or boron alloy. Combination padlocks are available in dial or scrolling combo formats, with color-coded dials (blue, gold, black) for identification. Bluetooth padlocks offer keyless access via smartphone, with compatibility for access management systems. Lockboxes feature digital combination locks and key capacities up to 5 keys, with vinyl-coated metal construction for weather resistance. Built-in locker locks, such as deadbolt models, are designed for new installations or retrofitting existing systems, with keying options including random keying for new systems or specified keying for existing systems. 3G Electric supplies Master Lock products globally, offering a range of SKUs that include padlocks, lockboxes, and locker locks. The inventory covers standard and long shackle combination padlocks, Bluetooth padlocks, key-controlled scrolling combination padlocks, and lockboxes with digital combination locks. Specifications such as shackle length, body material, lock style, and key capacity are provided to assist engineers and procurement specialists in selecting appropriate products for specific security requirements. Master Lock products are designed to meet common industry standards for durability and security, with materials and construction suitable for indoor and outdoor use. The brand's long history in security products provides a baseline for reliability, though specific certifications or ratings should be verified against product datasheets. 3G Electric's catalog allows comparison of specifications across models, enabling buyers to match lock features to application needs without reliance on marketing claims.

Common Applications

  • Locker security in industrial facilities — Master Lock built-in deadbolt lock (MPN 1710) for employee lockers
  • Equipment access control on job sites — Master Lock Bluetooth padlock (MPN 4400ECWWG) for tool cribs and gates
  • Key management for fleet vehicles — Master Lock lockbox (MPN 5440ECWWG) securing vehicle keys at depots
  • Padlock for outdoor storage units — Master Lock long shackle combination padlock (MPN 175LH) for hasps on sheds
  • Keyless entry for maintenance panels — Master Lock scrolling combination padlock (MPN 975DCOM) on electrical enclosures
  • High-security locking for warehouse cages — Master Lock stainless steel combination padlock (MPN 1500LF) for corrosion resistance

Frequently asked questions

Common questions about MASTER LOCK from 3G Electric.

What types of Master Lock combination padlocks are available through 3G Electric?

3G Electric stocks Master Lock combination padlocks in standard and long shackle configurations. Models include dial combination padlocks (e.g., MPN 1528D with blue dial, steel body) and scrolling combination padlocks (e.g., MPN 975DCOM with gold dial, brass body). Shackle materials are steel, with body options in brass, stainless steel, or steel. Long shackle models like MPN 175LH and MPN 1500LF provide extended clearance for thicker doors or hasps. Dial colors vary (blue, gold, black) for visual identification. These padlocks are keyless, using a combination mechanism for access.

How does the Master Lock Bluetooth padlock (MPN 4400ECWWG) work?

The Master Lock Bluetooth padlock (MPN 4400ECWWG) uses Bluetooth connectivity to enable keyless access via a smartphone app. It features a black steel body and a boron alloy shackle for enhanced cut resistance. The padlock is part of Master Lock's electronic line, allowing users to grant temporary or permanent access, track usage, and manage multiple locks from a single app. It operates on battery power and is suitable for indoor or sheltered outdoor use. The standard shackle size fits common hasp and locker applications.

What is the key capacity of the Master Lock lockbox (MPN 5440ECWWG)?

The Master Lock lockbox (MPN 5440ECWWG) has a key capacity of 5 keys. It features a digital combination lock with a vinyl-coated metal body in gray. The outside dimensions are 7 1/4 inches in height and 3 1/4 inches in width. This lockbox is designed for securing keys to equipment, vehicles, or facilities, with a weather-resistant finish suitable for outdoor mounting. The digital combination allows keyless access, and the lock can be programmed with a user-set code.

Are Master Lock built-in locker locks like the MPN 1710 keyed to existing systems?

The Master Lock deadbolt lock (MPN 1710) is supplied as keyed random for new installations. If you need it keyed to an existing system, you must specify this when ordering. The lock has a 7/32-inch mounting hole diameter and a 3/8-inch latch bolt projection, making it suitable for standard locker doors. It is a built-in keyed locker lock in silver finish. For retrofitting, ensure compatibility with your locker's mounting hole pattern and door thickness.

What materials are used in Master Lock padlock bodies and shackles?

Master Lock padlocks use a range of materials depending on the model. Bodies are available in brass (e.g., MPN 975DCOM), stainless steel (e.g., MPN 1500LF), or steel (e.g., MPN 1528D). Shackles are typically steel, with some models like the Bluetooth padlock (MPN 4400ECWWG) using boron alloy for increased cut resistance. Brass bodies offer corrosion resistance for outdoor use, while stainless steel provides durability in harsh environments. Steel bodies are common in standard industrial applications.

Can Master Lock combination padlocks be re-keyed or have combinations reset?

Master Lock combination padlocks vary in reset capability. Dial combination padlocks (e.g., MPN 1528D) typically allow user-set combinations that can be changed by following the manufacturer's instructions. Scrolling combination padlocks (e.g., MPN 975DCOM) also permit combination reset. For key-controlled scrolling combination padlocks like the MPN K176CR P569, a control key is used to change the combination. Refer to the product manual for specific reset procedures, as some models may require tools or special steps.