Simpson Strong-Tie Hanger Screws vs. Generic Fasteners: What a Quality Inspector Checks

When I first started reviewing structural fasteners, I compared them the same way a lot of buyers do: price, diameter, length, and the picture on the package. I didn’t pay enough attention to the documentation behind the part. A few rejected lots changed that.

I’m a quality/compliance manager at a building products distributor. I review roughly 1,100 fastener and connector line items per month, and in Q1 2024 I rejected about 3% of first deliveries. Most weren’t broken. They were missing traceability, defined coating information, or published data for the job they were sold for.

So when someone asks me to compare Simpson Strong-Tie hanger screws with a cheaper unbranded option, I don’t start with “which is stronger?” I start with four questions: What load data supports it? What coating is on it? Can it be traced? And what does it really cost to install and inspect?

1. Published Load Data Separates Structural Hardware From Look-Alikes

The first thing I check is whether the manufacturer publishes a rated load. Simpson Strong-Tie publishes load tables for its connectors, anchors, hanger screws, and deck hardware, and those products are often covered by evaluation reports used in code-regulated construction. That means the load path is not a guess. An engineer, contractor, or inspector can look up the connection.

A generic hanger screw can have the same length and thread pitch and still not have a published connection value. If it’s going into a deck ledger, a floor joist, or any other load-bearing connection, that missing data is enough for me to reject it.

Read the connector’s installation instructions before substituting anything. Many hangers list a specific fastener. When they do, replacing it with an unlisted screw takes that connection outside the manufacturer’s published load path. The substitute might be stronger in a bench test, but it isn’t verified for that hanger.

The term “self-drilling screw” confuses this even more. A self-drilling screw is designed to eliminate a separate pilot hole, often for metal-to-metal fastening. That’s a labor-saving feature, not a structural rating. If the screw isn’t listed for the connector, it shouldn’t be treated as a substitute for a hanger screw.

For structural work, the question isn’t “does it fit?” It’s “what is the rated load, and who verified it?”

2. Simpson Strong-Tie Deck Hardware: Coating Is Part of the Spec

Deck hardware is a good comparison point because it looks simple. Two brackets with the same bend pattern can appear equal until you check the finish and the intended exposure.

Simpson Strong-Tie deck hardware is sold in different finish categories for different environments. The label tells you what the product is intended for. A cheaper “zinc plated” bracket might look similar in the store but may not have corrosion data for exterior exposure or direct contact with preservative-treated lumber.

I’ve rejected parts labeled only “zinc plated” for an exterior deck connection when the contract required a galvanized or stainless product. Not because zinc is always wrong, but because “zinc plated” is not the same as a defined exterior coating system.

3. Traceability: Why the Brand Name Is More Than Marketing

Brand doesn’t mean the product never fails. It means a real manufacturer is responsible for the product, and it can usually be traced to a specific production batch.

One example that stuck with me: a pallet of 10,000 hanger screws looked correct, measured correct, and had no lot number or manufacturer identification on the packaging. If those screws had gone out and someone found a coating problem two years later, nobody could identify which jobs were affected. We rejected the lot. It was inconvenient, but not as inconvenient as a deck connection failure.

As of January 2025, I still see “equivalent” fasteners that cannot produce a manufacturer’s certificate or a lot trace. Maybe the metal is fine. For a structural application, I’m not willing to guess.

4. Total Installed Cost vs. Price Per Box

On paper, unbranded fasteners often win. The problem is that the purchase price isn’t the full cost.

Here’s a rough example from my own review work in 2024. A project needed 1,200 connector screws. The unbranded alternative would have saved about $0.04 per screw, or $48 total. But the package didn’t provide a coating rating or a published evaluation report for the hanger being used. The building official rejected the fastener before installation. The buyer had to return them, order listed hardware, and pay for a second inspection. The $48 saving turned into hundreds of dollars in extra cost.

I can’t promise that a listed product will always be cheaper. I can promise that an inspection rejection is usually more expensive than the product price difference.

5. When the Comparison Isn’t About Fasteners

Not every product decision needs structural load tables. A 3/4 inch ball valve, for example, is compared by body material, pressure rating, port size, and stem seal. A chrome handle tells you nothing about whether the valve can handle the pressure in the line. The quality principle is the same: identify what can fail if the part is underspecified.

The same thinking applies to common carpentry questions. If someone asks how to cut a hole in wood without a hole saw, the practical answer is to drill a pilot hole and use a jigsaw for larger circles, or use a sharp spade bit for a smaller hole. But before cutting, know what the wood is doing. A round access hole in a non-load-bearing panel is a low-risk job. A large hole or notch cut into a floor joist changes the structure, and no cutting method fixes that.

What I’d Choose, and When

If the connection is structural and the spec calls for Simpson Strong-Tie hanger screws or listed deck hardware, I would buy the specified product or an equivalent that can prove it meets the same published values. If a generic product has its own load data, its own finish rating, and a traceable lot, then it deserves a fair comparison.

For nonstructural jobs, such as a shelf bracket or a temporary support, the risk is lower, and a simpler fastener can be the right call.

My bottom line is not “always buy the expensive brand.” It’s this: buy the product that can answer questions after it’s installed. For structural connections, that means documented load values, defined coating, traceable production, and total cost that includes inspection and rework. That’s the difference that shows up in the field.