Master Lock Co 312D Laminated Padlock Weatherproof 1-1/2 in

Product Description

The MASTER LOCK CO 312D is a laminated steel padlock fitted with a blue weatherproof cover designed to protect the lock body from rain, snow, and extreme outdoor conditions. The shackle is hardened steel, measuring 1 inch in height and 3/8 inch in diameter, providing solid resistance to cutting and prying. This padlock suits outdoor gate locks, storage units, equipment yards, and utility enclosures where prolonged weather exposure is a concern. Electricians, HVAC technicians, and facilities maintenance personnel commonly use this type of padlock for lockout/tagout procedures and secured equipment access points.

The 312D is well suited for residential and light commercial applications where an all-weather, keyed padlock is required. The laminated steel body adds durability and the weatherproof cover extends service life in harsh environments. This padlock ships individually carded and is sold in packages of 4 units, making it a practical choice for stocking multiple access points on a job site or facility.

Key Features

• Blue weatherproof cover protects the lock body from moisture and extreme elements
• Hardened steel shackle resists cutting and prying
• Shackle height: 1 inch; shackle diameter: 3/8 inch
• Laminated steel body construction for added strength and durability
• Keyed using Master Lock key blank K1BOX or Ilco blank M1 TV 320-952
• Sold carded; package quantity of 4 units

Compatibility

The 312D uses Master Lock key blank K1BOX or Ilco blank M1 TV 320-952. Designed as a direct-fit weatherproof padlock for standard outdoor hasp and staple applications.

Installation Notes

Installation requires no tools beyond fitting the shackle through a hasp or staple. Ensure the mounting hasp is rated for the shackle diameter before securing. For lockout/tagout applications, verify compliance with OSHA 29 CFR 1910.147 procedures before placing the lock in service. The weatherproof cover should be kept seated over the lock body to maintain weather protection.

Technical Specifications

• Body Width: 1.5 inches
• Shackle Height: 1 inch
• Shackle Diameter: 0.375 inch
• Body Material: Laminated Steel
• Weight: 2 pounds (package of 4)
• Package Quantity: 4 units
• Unit of Measure: EA

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 312D