Hex Socket Screws – Stainless Steel (TCEI – TBEI + TBEI/FL – TPSEI)
Hex socket screws include the following types:
- TCEI – Cylindrical head with hex socket (DIN 912 / UNI 5931);
- TBEI – Button head with hex socket (ISO 7380);
- TBEI/FL – Flanged button head with hex socket (ISO 7380-2);
- TSPEI – Flat countersunk head with hex socket (DIN 7991 / UNI 5933);
These screws are distinguished by their internal hex drive, making them ideal for tight spaces and assemblies that require a clean look or secure tightening.
Fields of Application
Our stainless steel screws and bolts are used in:
- Mechanical industry: fastening precision components and machinery.
- Automotive: assembly of engine internals and lightweight frame parts.
- Aerospace: applications requiring reduced weight and maximum safety.
- Electronics: compact and discreet fixings for devices.
- Industrial design: aesthetic solutions for furniture and structural elements.


