Master Lock Co 3KALH-3769 Laminated Padlock Long Shackle

Product Description

The MASTER LOCK CO 3KALH-3769 is a laminated steel padlock built for applications that require an extended shackle reach. The body measures 1.5 inches and the shackle extends 2 inches in length with a 9/32-inch diameter, providing clearance for hasps, chains, and fencing hardware where a standard shackle would not reach. The padlock ships keyed alike to the 3769 key code, meaning every lock in the set operates with the same key — a practical advantage for facilities managers, contractors, and service technicians managing multiple access points. Compatible key blanks are the Master Lock K1BOX or the Ilco M1 TV 320-952.

This padlock is suited for commercial and light industrial use cases including gate latches, tool cribs, storage lockers, and equipment cabinets. The laminated body construction offers resistance to prying and physical attack, making it a reliable choice for outdoor and semi-exposed installations. Tradespeople in HVAC, plumbing, electrical, and pool service who secure equipment enclosures or rooftop access panels will find the long shackle particularly useful for oversized hasp openings.

Key Features

• 2-inch long shackle provides extended clearance for chains, hasps, and heavy-duty fencing hardware
• 9/32-inch shackle diameter for solid resistance to cutting attempts
• Keyed alike to key code 3769 — all units in the set use the same key
• Compatible with Master Lock key blank K1BOX or Ilco blank M1 TV 320-952
• 1.5-inch laminated body construction for durability and pry resistance
• Packaged and sold individually (unit of measure: each)

Compatibility

Keyed alike to Master Lock key code 3769. Compatible replacement key blanks are the Master Lock K1BOX and the Ilco M1 TV 320-952. Designed as an OEM-style replacement or add-on unit for keyed-alike padlock sets using this key code.

Installation Notes

Installation requires no special tools — insert the shackle through the hasp or chain link and press down until it locks. Verify that the hasp or anchor point diameter is compatible with the 9/32-inch shackle before installing. For outdoor or exposed installations, inspect the shackle and body periodically for corrosion and apply a lock lubricant to the keyway as part of routine maintenance. No electrical or mechanical system shutdown is required for this product.

Technical Specifications

• Body Width: 1.5 inches
• Shackle Length: 2 inches
• Shackle Diameter: 9/32 inches
• Key Code: 3769 (Keyed Alike)
• Compatible Key Blanks: Master Lock K1BOX, Ilco M1 TV 320-952
• Weight: 3.1 pounds
• Package Quantity: 6 per package
• Unit of Measure: EA

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 3KALH-3769