National Marker N342550 Heavy-duty Hinge Hasp 7.5 in

Product Description

The NATIONAL MARKER N342550 is an extra heavy-duty hinge hasp designed for high-security closure applications on doors, gates, storage units, and outbuildings. Built from stainless steel with a stainless steel staple, this 7.5-inch hasp resists rust and is rated ACQ safe, making it suitable for use with pressure-treated lumber, cedar, and redwood. The square center hole accepts a carriage bolt for a tamper-resistant installation. At 1.206 pounds, the unit is built for demanding environments where a standard hasp would not hold up. Licensed tradespeople and general contractors rely on this hasp for securing enclosures where a padlock is required.

This hasp is well suited for residential and light commercial gate hardware, utility shed doors, fence access panels, and storage enclosure latches. Its around-the-corner application capability makes it a practical choice where door framing or box construction creates an offset between the door face and the frame. The ACQ-safe rating means it will not react with the preservative chemicals in treated lumber, preventing the accelerated corrosion that affects standard steel hardware in outdoor installations.

Key Features

• 7.5-inch overall length for extra heavy-duty security closure
• Stainless steel construction with stainless steel staple for corrosion resistance
• ACQ safe — compatible with pressure-treated, cedar, and redwood lumber
• Square center hole accepts a carriage bolt to prevent hasp removal without tool access
• Designed for around-the-corner applications where door and frame are offset
• Sold individually — 1 per pack

Compatibility

Designed as an OEM-style replacement or new-installation hinge hasp for standard door, gate, and storage enclosure applications requiring a heavy-duty padlock-compatible closure on wood or compatible surfaces.

Installation Notes

Installation is typically performed by a carpenter, general contractor, or experienced DIYer using standard fasteners and hand tools. For maximum security, use carriage bolts through the square center hole rather than wood screws alone, and back them with washers and nuts on the interior side of the door or panel. Ensure mounting surfaces are structurally sound before installation. When installing on treated lumber, use only ACQ-compatible fasteners throughout to avoid galvanic corrosion.

Technical Specifications

• Length: 7.5 inches
• Material: Stainless Steel
• Staple Material: Stainless Steel
• Weight: 1.206 pounds
• ACQ Safe: Yes
• Quantity per Pack: 1
• UPC: 00038613342552

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N342550