MroMax Countersunk Machine Screws M6 x 12mm

If a screw head sticks out where you need a flat surface, a countersunk design can help create a neater, flush-mounted finish. These MroMax machine screws have a 90-degree conical head and a Phillips recess, with M6 x 12mm sizing for assemblies that call for those dimensions. The listing names cribs, chairs, and bicycle components, while the detailed description also mentions electrical fixtures and boxes. The important part is matching the screw to the specific hole and application rather than assuming the listed uses are interchangeable.

What to know

The pack contains 35 screws in a plastic box. Each is made from 304 stainless steel and has a bright finish. The listed thread pitch is 1mm, the screw length is 12mm, the head diameter is 11.3mm, and the head thickness is 3.3mm. Those measurements give you a useful starting point when replacing a screw, but they do not establish that it will fit every chair, bike part, crib, or electrical fitting mentioned in the listing.

The countersunk head is intended to sit flush when paired with a matching countersink in the material. That can be helpful on a surface where a raised head would catch or interfere. The Phillips cross recess is a familiar drive style, and the stainless-steel construction is described as corrosion-resistant. Keep in mind that the fit still depends on the receiving thread and the material, the screw dimensions alone cannot confirm either one. From the way it is set up, this is a specific-size replacement or assembly fastener, not a general-purpose assortment.

Best use cases

These make the most sense when you already know you need M6 x 12mm machine screws with a 1mm pitch and a flat, countersunk head. For example, during a chair repair, you could compare a removed screw with the listed dimensions, then use the replacement where the original head sat level with the surface. The product name also lists bicycle components, but that does not mean it suits every part or load-bearing connection, match the original fastener and the component’s requirements.

It suits you if you need several identical screws for a defined repair or assembly and want a stainless-steel option with a flush-head design. If you are choosing between this pack and a mixed-size kit, this one is more useful when the required size is already clear, a mixed assortment makes more sense when you have not identified the screw you need. It might not be a great match if you need another length, a different head style, or confirmation of compatibility with a specific fitting.

Tips for day-to-day use

Before installation, compare the screw against the original or the part’s specified size, including the pitch and length. Check that the surface has a countersink suited to the conical head, a flat-head screw is not automatically flush in a plain, unprepared hole. Start the screw carefully so it engages the existing thread cleanly, and stop if it binds rather than forcing it. The supplied plastic box can keep the 35 screws together between jobs, though the listing does not describe dividers or other storage details.

Practical doubts

How many screws are included? The package contains 35 M6 x 12mm screws in a plastic box.

What does M6 x 12mm describe? The listing gives a 12mm screw length and a 1mm pitch for the M6 size. It also lists an 11.3mm head diameter and 3.3mm head thickness.

Will they sit flush on any surface? Not necessarily. The 90-degree countersunk head is designed for a matching countersunk seat, the screw itself cannot create that shape in a flat surface.

Buying verdict

Choose these when the M6 x 12mm size, 1mm pitch, Phillips drive, and countersunk head all match the job you have in front of you. The 35-piece quantity suits repeat replacements or a small assembly using the same fastener. Skip this pack if you are still guessing at the thread, need a different head or length, or need verified suitability for a safety-critical connection: the listing provides dimensions and broad applications, not a fit check for a particular component.