Master Lock Co 312TRI Laminated Padlock 1-1/2 in 3 Pack

Product Description

The MASTER LOCK CO 312TRI is a 3-pack of 1-1/2-inch laminated padlocks, each fitted with a blue weatherproof cover designed to protect the lock body from rain, snow, dust, and extreme temperature exposure. The shackle is hardened steel, measuring 1 inch in length and 3/8 inch in diameter, providing solid cut resistance for outdoor and exposed-environment applications. All three locks in the pack are keyed alike, reducing the number of keys a technician or facility manager needs to carry. This product is suited for securing outdoor equipment, HVAC disconnect boxes, gate hasps, and service panels in harsh-weather conditions.

This padlock set is a practical choice for trade professionals who need consistent, weather-resistant keying across multiple lock points on a job site or facility. The weatherproof cover makes these locks appropriate for outdoor electrical disconnects, rooftop HVAC units, storage enclosures, and utility access points exposed to the elements. The keyed-alike configuration simplifies access management when the same technician services multiple secured locations.

Key Features

• Blue weatherproof cover protects the lock body from rain, snow, and extreme elements
• Hardened steel shackle resists cutting and corrosion in outdoor environments
• 1-inch shackle length with 3/8-inch shackle diameter for standard hasp and staple applications
• All 3 locks keyed alike for single-key access across multiple lock points
• Compatible with Master Lock Key Blank K1BOX or Ilco Blank M1 TV 320-952 for rekeying
• Laminated steel body construction for added durability

Compatibility

Compatible with Master Lock Key Blank K1BOX or Ilco Blank M1 TV 320-952. Designed for use with standard hasp and staple hardware in outdoor and exposed-environment applications.

Installation Notes

Installation requires no special tools — insert the shackle through the hasp or staple and press to lock. Before securing an electrical disconnect or service panel, confirm all power has been shut off and proper lockout/tagout procedures are followed per OSHA 29 CFR 1910.147. Inspect the weatherproof cover regularly and replace if cracked or torn to maintain protection against the elements.

Technical Specifications

• Body Width: 1-1/2 inches
• Shackle Length: 1 inch
• Shackle Diameter: 3/8 inch
• Shackle Material: Hardened Steel
• Pack Quantity: 3 locks
• Keying: Keyed Alike
• Weight: 3.32 pounds

Standard Information

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