Sutemribor Button Head Socket Cap Screws M3 x 12mm

If your project calls for a low-profile fastener that can be removed for maintenance, these M3 x 12mm button head socket cap screws are designed for that kind of assembly. Their rounded heads have recessed hex sockets, and the fully threaded shafts give you threads along the stated 12mm length. The 304 stainless steel construction is also a practical fit for buyers who want a rust-resistant material for everyday hardware use.

The key tradeoff is fit: these screws are only suitable where the receiving threads and available clearance match their dimensions. They aren’t a substitute for a different screw length or thread size.

Key specifications

The package contains 105 silver screws, each with an M3 thread diameter, a 12mm thread length, and a 0.5mm thread pitch. They’re fully threaded and use a button head with a recessed hex drive. The stated material is 304 stainless steel, described as corrosion- and rust-resistant, that makes it useful for general assemblies, though the listing doesn’t specify a load rating or guarantee performance in a particular environment.

For a removable panel, for example, the rounded head can sit neatly against the surface while the hex socket gives you a direct way to tighten or remove the fastener with the included wrench. Check the panel thickness and threaded hole depth against the screw length before assembling, so the screw can engage properly without bottoming out.

Who it’s for

These are aimed at repair benches and small assembly jobs where M3 hardware is already specified: machinery, electronics, instruments, lighting, toys, household appliances, and similar projects. The 105-piece quantity may be useful when you need spares or expect to use several screws across one job. A solid pick if you want a supply of one consistent size for removable parts rather than a mixed assortment of fasteners.

Not the best choice if your project calls for a different thread pitch, a shorter or longer screw, or a head style that sits flush. Stainless steel is a material detail, not a substitute for confirming that the screw matches the load and conditions of your application. The listing doesn’t give a strength rating, so don’t choose these based on an assumed load capacity.

What’s included

You get 105 M3 x 12mm button head socket cap screws and a hex wrench. The wrench is a useful addition for basic installation, but no wrench size is stated. If your work depends on a particular tool fit, allow for that missing detail before starting.

Questions before you buy

What thread pitch do these screws use? The listed pitch is 0.5mm. Match it to the receiving threads, matching diameter alone isn’t enough to confirm compatibility.

Are they fully threaded? Yes. The listing describes the screws as fully threaded along the stated 12mm thread length.

What material are they made from? They’re listed as 304 stainless steel. The material is described as corrosion-resistant, but no specific exposure rating is provided.

Is it worth it?

If your project specifically needs M3 x 12mm button head screws, the 105-piece pack and included hex wrench make this a straightforward way to stock that one size. It suits repeat assembly or keeping spares on hand better than buying a broad assortment when you already know the required dimensions. The limit is just as clear: there’s no flexibility in the listed size, and the product details don’t provide a load rating. Choose it when the thread, length, and head style match your assembly, pass if any of those are still uncertain.