Simpson Strong Tie HU410 4x10 Joist Hanger Product Description Most models have triangle and round holes. To achieve maximum loads, fill both round and triangle holes with common nails. These heavy-duty connectors are designed for schools and other structures requiring additional strength, longevity, and safety factors. 14-gauge galvanized steel. From the Manufacturer Simpson Strong-Tie connectors make projects easier to build while making them stronger and safer. They are engineered and tested to perform and are manufactured to the highest quality standards. Whether working on a home project or building a structure to comply with building codes, go with the choice of engineers and contractors, go with genuine Simpson Strong-Tie connectors. These heavy-duty face mount joist hangers are designed for schools and other structures requiring additional strength, longevity and safety factors. Features Extra optional triangle holes for additional load HU-series hangers are tested, load rated and code compliant Nominal joist size: 4x10 Made from 14-gauge steel Galvanized (G90) for extra corrosion resistance USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.