Simpson Strong-Tie LU24 Face-Mount Joist Hanger is a light face-mount wood connector made for joist-to-header installation in wood-framed construction. This is a joist hanger designed for securing a nominal 2x4 joist to a wood header. Model Number: LU24. If you need a simple, code-recognized way to support short joists, blocking, or framing members without field-made notching or guesswork, this is the right type of connector.

The LU24 is part of Simpson Strong-Tie's LU series, which is tested, load rated, and code compliant. For this specific model, the connector is sized for a 2x4 joist with a 1-9/16 inch seat width and a 3-1/8 inch height. That sizing matters because it gives the joist proper bearing and keeps installation consistent across repeated framing bays. In practical terms, it helps you get the member where it belongs and keep the load path more predictable than toe-nailing alone.

This hanger is made from 20-gauge steel with a zinc galvanized G90 finish. The galvanized coating adds corrosion resistance for typical protected framing applications, while the formed steel body gives the hanger the stiffness it needs for everyday wood-to-wood structural connections. Simpson calls out the LU as value engineered for strength, which is the honest appeal here: it is not oversized for the sake of looking heavy-duty, but it is built and tested for the job it is meant to do.

One of the more useful details on the LU24 is the speed prong feature. Those prongs temporarily position and secure the connector before the full fastener pattern is installed. On the job, that saves a step because you are not fighting the hanger while reaching for nails or screws. If you are laying out several hangers along a header, that small detail speeds up the whole run and helps keep placement cleaner.

Fastener flexibility is another reason this connector stays popular. Simpson lists the LU series as usable with several fastener selections with tested allowable loads. For LU24, the published schedule includes Strong-Drive SD screws, with 4 SD9112 fasteners at the face and 2 SD9112 at the joist in the listed load table. Lowe's also notes installation with (4) 0.162 inch x 3-1/2 inch nails in the header and (2) 0.148 inch x 1-1/2 inch nails in the joist, or #9 x 1-1/2 inch Strong-Drive SD screws where allowed. That gives builders some flexibility depending on the job and the approved fastening method being used.

For buyers comparing connectors, the big advantage of the Simpson Strong-Tie LU24 Face-Mount Joist Hanger is that it keeps a common 2x4 wood-to-wood connection straightforward. You get a compact face-mount hanger that is easier to place than site-built alternatives, offers published allowable loads, and comes from a connector line widely used in residential framing and remodeling. It is a practical choice for carpenters, deck builders, general contractors, and serious DIY users who need a real structural connector instead of improvising a connection that may not pass inspection.

Simpson Strong-Tie LU24 Face-Mount Joist Hanger keeps simple framing connections simple

If you are hanging a 2x4 off a wood header, this connector does exactly what it should without wasting time, space, or money.

• Who it's for: Carpenters, deck builders, remodelers, and serious DIY users making wood-to-wood 2x4 framing connections.
• Why it stands out: The published load data, G90 galvanized steel, and speed prongs make it more than just a bent piece of metal. It is a real structural connector from a line pros already know and trust.
• Worth knowing: This is a light face-mount hanger sized specifically for a 2x4. Make sure you use the specified fasteners and match the hanger to the member size instead of forcing a close-enough fit.

• What size lumber is the LU24 made for? It is sized for a nominal 2x4 joist.
• What kind of connection is this hanger used for? It is a face-mount hanger for joist-to-header installation in wood-framed construction.
• Is the LU24 galvanized? Yes. It has a zinc galvanized G90 finish for corrosion resistance in typical framing applications.
• Can it be installed with screws instead of nails? Yes, Simpson Strong-Tie lists approved Strong-Drive SD screw options for the LU series, including LU24, with published allowable loads.