Master Lock Co 131Q Aluminum Padlock 1-3/16 Inches 4-pack

Product Description

The MASTER LOCK CO 131Q is a solid aluminum body padlock sold in a 4-pack, designed for general security applications across trade and facility maintenance environments. The padlock features a hardened steel shackle measuring 5/8 inches in length and 3/16 inches in diameter, providing reliable cut resistance for light-to-medium duty use. The body width is 1-3/16 inches. A 4-pin tumbler cylinder delivers consistent keying security. Licensed locksmiths, facility managers, and trade contractors typically stock this padlock for securing tool storage, utility access points, and equipment enclosures.

The 131Q is suited for residential and light commercial applications where a compact, corrosion-resistant aluminum body is preferred over heavier steel options. Common install scenarios include securing HVAC equipment access panels, electrical meter enclosures, gate hasps, and storage cabinets. The 4-pack format is practical for contractors managing multiple access points on a single job site or property. Key blanks compatible with this lock are the Master Lock K130BOX or the Ilco blank TV 342-543, which is useful when rekeying or duplicating keys through a locksmith.

Key Features

• Solid aluminum body at 1-3/16 inches width for lightweight, corrosion-resistant performance
• Hardened steel shackle with 5/8 inches length and 3/16 inches diameter for cut resistance
• 4-pin tumbler cylinder for reliable key security
• Compatible key blanks: Master Lock K130BOX or Ilco TV 342-543
• Sold as a 4-pack for multi-point security applications

Compatibility

Compatible key blanks are the Master Lock K130BOX and the Ilco blank TV 342-543. Designed as an OEM-style replacement or standard stocking padlock for residential and light commercial security applications.

Installation Notes

Installation requires no special tools — insert shackle through the hasp or staple and close the lock body until the shackle clicks into place. Ensure the mounting hasp is rated for the intended security level before installing. For keyed-alike or master-keyed configurations, consult a licensed locksmith. Do not force the shackle if binding occurs, as this may indicate a misaligned hasp or damaged cylinder.

Technical Specifications

• Body Material: Solid Aluminum
• Body Width: 1-3/16 inches
• Shackle Material: Hardened Steel
• Shackle Length: 5/8 inches
• Shackle Diameter: 3/16 inches
• Cylinder Type: 4-Pin Tumbler
• Package Quantity: 4
• Weight: 3 pounds

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 131Q