Aluminum 6061 6063 7075 T5 T6 M48 M56 HAILF THREAD T-Head Metal Bolts With Hole DIN261

Aluminum 6061 6063 7075 T5 T6 M48 M56 HAILF THREAD T-Head Metal Bolts With Hole DIN261

Product Description

The T-Head Bolt with a Transverse Hole is a specialized fastener where a precisely drilled hole passes horizontally through the T-shaped head, perpendicular to the axis of the threaded shank. This hole serves as a dedicated point for secondary securing or safety locking. After the primary nut is tightened, a safety wire (lock wire), a cotter pin, or a secondary locking pin can be inserted through this transverse hole and secured to an adjacent fixed point. This creates a positive mechanical lock that prevents the bolt from unintentionally backing out due to vibration, thermal cycling, or other dynamic forces, which is a critical safety requirement in many industries. These bolts are often made from high-grade alloy steels to ensure the integrity of the drilled hole under stress.

Key Features

They are indispensable in critical safety applications such as aerospace assemblies, high-performance racing components, railway bogie connections, and any machinery where fastener failure could have catastrophic consequences.Their defining advantage is the provision of a reliable, fail-safe locking mechanism. The key point is that the installation of the secondary locking device (e.g., safety wiring) must be performed correctly according to relevant industry standards to be effective.