Sugatsune HP-645 Weld-on Locking Hasp 1.5 in Stainless

Product Description

The SUGATSUNE HP-645 is a weld-on locking hasp fabricated from stainless steel with an electropolished finish. It is designed for secure closure applications where the mounting surface requires a permanent welded attachment rather than a bolted or screwed mount. The hasp features a 1.5-inch overall width and a 4.5-inch arm length, making it well-suited for enclosures, access panels, hatches, and equipment doors that demand corrosion resistance and a clean, smooth surface finish. Fabricators, millwrights, and maintenance technicians typically specify and install this type of hardware.

The HP-645 is intended for use on metal enclosures, toolboxes, storage cabinets, marine equipment, and industrial access doors where weld-on mounting is preferred for maximum pull strength. Its stainless steel construction and electropolished surface make it appropriate for environments exposed to moisture, chemicals, or sanitary wash-down conditions. It ships individually and is ordered in single-unit quantities.

Key Features

• Weld-on mount type eliminates the need for through-bolts or surface fasteners
• Stainless steel construction provides corrosion resistance in demanding environments
• Electropolished finish reduces surface roughness and enhances corrosion protection
• 4.5-inch arm length accommodates standard padlock shackle sizes
• 1.5-inch overall width suits compact enclosure and hatch applications

Compatibility

Designed as an OEM-style weld-on locking hasp suitable for metal enclosures, equipment doors, hatches, and access panels requiring permanent welded hardware attachment.

Installation Notes

Installation is performed by a qualified welder or fabricator using MIG or TIG welding appropriate for stainless steel substrates. Proper surface preparation and heat control are critical to avoid warping or contaminating the stainless steel. Ensure all adjacent components are protected from weld spatter before beginning. Allow the weld area to cool completely before applying any load or attaching a padlock.