Description
An "8.8 H/T Hex HD Set Screw Zinc Plated" is a strong, medium-tensile steel screw used in general industrial, construction, and automotive applications for general fastening and structural connections that need to handle shear and tensile loads. The "8.8" indicates a high-tensile, heat-treated steel grade, "H/T" means High Tensile, "Hex HD" specifies a hexagonal head, and "Plain" refers to the self-color or unplated finish. It is a fully threaded bolt, sometimes called a set bolt or set pin, and is often used with nuts and washers. 8.8:Â Refers to the material's mechanical properties, specifically a medium-tensile strength carbon steel that has been quenched and tempered. H/T:Â Â An abbreviation for High Tensile, highlighting its ability to withstand significant load.ÂHex HD:Â Â Stands for Hexagonal Head, the shape of the screw's top, which requires a spanner or wrench to tighten.Â
Set Screw:Â Â In American English, this term describes a screw that fastens by exerting pressure or friction against another object, such as a gear or pulley on a shaft. However, in the context of DIN 933 and ISO 4017, "Hex Head Set Screw" can also refer to a fully threaded hexagon bolt.Â
Plain:Â Â Indicates the screw's finish is "self-color" (a natural steel finish). It offers no corrosion protection and is suitable for indoor maintenance or when a coating is not required.
Typical Uses
General Construction:Â Â For structural applications and general building projects.Â
Machinery & Equipment:Â Â To fasten components in machinery and equipment assemblies.Â
Automotive Industry:Â Â To assemble parts in vehicles due to their strength and durability.Â
Steel Fabrication:Â Â Used in various steel structures and fabrication projects.Â
Indoor Maintenance:Â Â The plain finish is suitable for indoor use where corrosion is not a concern.Â
