Screw M4x5 Torx Countersunk Head, SCHROFF, zinc-plated

SCHROFF countersunk-head screw M4x5 with Torx drive is a precision fastener designed for applications requiring a flush surface and reliable torque transmission. The zinc-plated finish provides basic corrosion protection while the countersunk head sits flush in sheet metal or preformed component holes. The Torx recess reduces cam-out and allows controlled tightening with compatible drivers, making this screw suitable for repeated assembly and maintenance in electronic enclosures and mechanical assemblies.

Advantages

The countersunk head ensures a smooth, recessed finish that prevents protrusions and interference with mating parts. Torx drive geometry delivers improved torque transfer and reduced driver slippage compared with slotted or Phillips heads. Zinc plating adds a protective layer against light corrosion and gives a uniform appearance. The M4x5 dimensions are compact for use in thin panels and close-tolerance assemblies.

Suitable for

• Securing components in electronic enclosures and chassis
• Fastening sheet metal panels where a flush surface is required
• Assembly of small mechanical parts and brackets
• Maintenance and repair tasks requiring repeatable torque control

Key specifications

• Thread size: M4
• Length: 5 mm (threaded length)
• Head type: Countersunk (flat) head
• Drive type: Torx recess
• Finish: Zinc-plated corrosion-resistant layer
• Material: Steel (zinc plated)

How to use

Place the screw into the countersunk hole so the head sits flush with the surface. Use a correctly sized Torx driver bit matched to the recess to engage the screw fully. Apply steady, even torque and avoid excessive tightening to prevent thread stripping or deformation of thin panels. For assembly in electronics, tighten to the torque recommended by the equipment manufacturer or to a level that secures the part without stressing the material.

Usage recommendations

Store screws in a dry environment to preserve the zinc plating. When fastening into thin or soft materials, consider using a washer or backing piece to distribute load. For environments with higher corrosion risk, select a stainless steel or additional corrosion-resistant finish.