Master Lock 2ka-3553 Laminated Brass Padlock Keyed Alike

Product Description

The MASTER LOCK 2ka-3553 is a laminated brass padlock built for commercial and industrial security applications where corrosion resistance and pick resistance are critical requirements. The body is constructed from layered brass plates, measuring 1-3/4 inches wide, which provides strength and weather resistance suited for outdoor, marine, and offshore environments. A 4-pin W1 cylinder resists picking and delivers long-term reliability. The hardened steel shackle, measuring 5/16 inch in diameter and 15/16 inch in length, is secured by a dual ball bearing locking mechanism that resists cutting, sawing, and prying. Facility managers, security personnel, and maintenance professionals install this lock where dependable keyed-alike access control is needed.

This padlock is well suited for gates, tool cribs, equipment storage, and other access points in commercial facilities, marine operations, and outdoor industrial settings. The keyed-alike configuration allows multiple locks to be operated with a single key, reducing the number of keys a technician or facility supervisor must carry. Its laminated brass body performs reliably in humid, salt-air, and wet environments where standard steel locks would corrode prematurely. The dual ball bearing shackle retention adds an additional layer of tamper resistance in high-traffic or unmonitored areas.

Key Features

• Laminated brass body measuring 1-3/4 inches wide for superior corrosion resistance in marine and outdoor environments
• Hardened steel shackle with dual ball bearing locking mechanism resists cutting, sawing, and prying
• 4-pin W1 cylinder provides pick resistance and long-term cylinder reliability
• Keyed-alike configuration allows multiple units to operate with the same key for simplified access management
• Shackle diameter of 5/16 inch and shackle length of 15/16 inch suit standard hasp and chain applications

Compatibility

Designed as an OEM-style keyed-alike padlock for use in commercial facility, marine, and industrial security applications where a laminated brass body and W1 keyway cylinder are specified.

Installation Notes

Installation of this padlock requires no tools beyond the hasp, chain, or fitting it secures. Before replacing an existing lock on an energized enclosure or electrical panel, de-energize the circuit and follow applicable NFPA 70E lockout/tagout procedures. Ensure the shackle clearance of the intended hasp or chain link matches the 5/16-inch shackle diameter before installation. Inspect the shackle and cylinder periodically in harsh environments and apply a light lubricant to the keyway to maintain smooth operation.

Technical Specifications

• Body Width: 1-3/4 inches
• Body Material: Laminated Brass
• Shackle Material: Hardened Steel
• Shackle Diameter: 5/16 inch
• Shackle Length: 15/16 inch
• Cylinder Type: 4-Pin W1 Tumbler
• Locking Mechanism: Dual Ball Bearing
• Keying: Keyed Alike

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 2ka-3553