Forged Black Hex head Screws

Our forged black hex head screws is produced strictly in accordance with the British standard BS 916-1953. We can send samples for free so that you can check the quality first. Contact us, tell us your requirements and we will provide you with a clear quotation.

Product details and parameters

The forged black hex head screws can be used to assemble furniture, fix electrical appliances or fix metal brackets. They are sturdy and durable and do not require subsequent adjustments. After installation, it's done easily, and then you can focus on other projects.

Metric hexagon head bolts are usually smoothed, and some have knurled or other anti-slip treatments to facilitate your better grip and operation during assembly. Its head will be marked with different hardness grades, models, etc., making it convenient for you to distinguish different bolts.

After installing the forged black hex head screws, you don't have to maintain them frequently. Its thread depth is sufficient to firmly hold the material and reduce the risk of loosening after long-term use. Mechanics use them to fix the engine hood. Construction workers use them to fix the frame joints. The black surface can effectively hide wear and tear. But these screws are not suitable for underwater use.

Ever stripped a bolt trying to adjust something?

Forged black hex head screws can solve this problem. The coarse tooth design can bite firmly on wood, metal, or plastic, with a long and stable fixation time, especially suitable for outdoor equipment such as garden cottages, fences, and terrace furniture. It can be installed faster by screwing it up with a screwdriver.

Product surface treatment

The surface treatment of Forged Black Hex head Screws is mainly for protection and basic functionality. The key process here is black oxide coating, also known as blackening. This process involves immersing the screws in a chemical solution that forms a thin black oxide layer on the surface. The layer isn’t just for color—it helps prevent rust and corrosion, especially in dry or indoor environments. Unlike some other coatings, this one is thin, so it doesn’t affect the fit of the screw with nuts or threaded holes. The treatment also adds a slight level of wear resistance, helping the screw hold up better during installation and long-term use. After blackening, the screws go through a drying process to remove excess moisture, which further reduces the risk of rust. This surface treatment is practical for most general-purpose uses, keeping the screws functional without adding unnecessary complexity.  

Product specifications and grades

Forged Black Hex head Screws come in a range of standard specifications and grades to fit different applications. In terms of size, the main measurements are diameter and length—common diameters range from M6 to M16, and lengths go from 16mm up to 100mm, covering most everyday and light industrial needs. The thread type is usually metric coarse thread, which is the most widely used for general purposes. When it comes to grades, the common ones are 8.8 and 10.9. Grade 8.8 is suitable for general loads, like securing wooden structures or light machinery parts. Grade 10.9 has higher tensile strength, so it’s used for heavier loads, such as in automotive components or industrial equipment. Each batch of screws is marked with the grade and size on the packaging, making it easy to identify the right one for your project. These specifications follow industry standards, so the screws are compatible with standard nuts and tools, ensuring easy installation and replacement.