Flat head Torx screw SCHROFF M4 x 8 mm, thread-locking, pack of 100

Flat head Torx screw SCHROFF M4 x 8 mm, thread-locking, pack of 100 is a fastening component designed for applications requiring a flush surface and secure retention. The screw features a flat countersunk head for level mounting and a Torx drive to reduce cam-out and enable higher torque transfer. A thread-locking element is applied to the threads to resist loosening caused by vibration and thermal cycling. The pack contains 100 identical screws for consistent use in assemblies and maintenance tasks.

Advantages

The countersunk flat head provides a flush finish that prevents protrusions and allows covers and panels to sit flat. The Torx drive reduces the risk of screwdriver slip and permits higher torque without damaging the screw head. Thread-locking on the threads improves joint reliability by resisting self-loosening under vibration and movement. Supplying the screws in a pack of 100 ensures uniform hardware choice across multiple units or repair jobs, simplifying inventory and installation.

Suitable for

• Fastening components in electronic enclosures and computer chassis where a flush surface is required
• Securing PCBs, mounting brackets, and internal hardware in servers and networking equipment
• Applications exposed to vibration where thread-locking increases joint retention

Key specifications

• Thread size: M4
• Length: 8 mm (thread length corresponds to specified length with flat head seating)
• Head type: flat/countersunk
• Drive type: Torx
• Feature: pre-applied thread-locking
• Quantity: pack of 100
• Intended use: fastening in electronics and computer equipment

How to use

Select the appropriate Torx driver that matches the screw’s drive size and place the screw in the countersunk hole so the head sits flush with the mating surface when tightened. Drive the screw with steady torque until the head is fully seated; avoid excessive force once the head contacts the surface to prevent over-torquing. The pre-applied thread-locking compound will cure in place and increase resistance to loosening; allow time for initial set if the assembly will be subjected to movement immediately after installation.

Usage recommendations

The screws are intended for mechanical fastening in electronics and should be used with compatible materials and hole preparations to achieve a flush mount. For critical assemblies, follow device manufacturer torque specifications and consider using calibrated drivers to ensure consistent clamping. Store the pack in a dry environment to preserve the thread-locking compound until use.