Master Lock 4130 Brass Keyed Different Padlock

Product Description

The MASTER LOCK 4130 is a small-format brass padlock designed for light-duty security applications where corrosion resistance is a priority. The brass body measures 1-1/8 inches wide and houses a 4-pin tumbler cylinder on a keyed-different configuration, meaning each lock ships with its own unique key cut. The steel shackle measures 3/16 inches in diameter with 9/16 inches of clearance height and 9/16 inches of internal width. At 0.09 pounds, this lock is well-suited for low-profile applications where weight and size constraints matter. Licensed tradespeople and facilities maintenance personnel commonly install this type of lock on cabinets, tool boxes, lockers, and access panels.

The 4130 is typically used in residential, light commercial, and industrial settings where a compact, corrosion-resistant padlock is needed. Its brass construction makes it appropriate for environments with mild moisture exposure, such as equipment rooms, storage areas, and utility enclosures. The keyed-different format is standard for general-purpose use where master-keying or key control across multiple locks is not required. It is a common choice for securing low-risk access points in HVAC, plumbing, and electrical service areas.

Key Features

• Brass body provides corrosion resistance for indoor and mild-exposure environments
• Keyed-different configuration with a 4-pin tumbler cylinder
• Steel shackle offers durability at a compact 3/16-inch diameter
• Shackle clearance of 9/16 inches accommodates standard hasps and staples
• Lightweight at 0.09 pounds, suitable for space-constrained hardware

Compatibility

Designed as a general-purpose replacement or addition for standard hasp-and-staple assemblies, locker fittings, and light-duty latch hardware that accept a 3/16-inch shackle diameter and up to 9/16-inch clearance height.

Installation Notes

This padlock is installed by facilities maintenance personnel, tradespeople, or qualified end users without specialized tools. Verify that the receiving hasp or latch hardware opening accommodates a 3/16-inch shackle before installation. Do not force the shackle into an undersized hasp, as this can damage the locking mechanism. Secure any enclosure or access panel according to applicable local safety codes before applying the lock.