Screw SCHROFF 21100-379 M3×10 mm steel for electronics chassis and mounting

SCHROFF halfscrew 21100-379 is an M3×10 mm steel fastening element designed for use in electronics enclosures, chassis and mounting assemblies. It delivers a standardized M3 thread and 10 mm body length, offering a compact, durable connection point for panels, racks and internal components. The screw is intended for mechanical fastening rather than carrying electrical current and is suitable for situations where consistent thread engagement and corrosion-resistant steel construction are required.

Advantages

The steel construction provides mechanical strength and wear resistance for repeated assembly and disassembly. The M3×10 mm dimensions follow common electronics industry standards, ensuring compatibility with threaded standoffs, nuts and tapped holes. Its compact length reduces the risk of protrusion into sensitive internal spaces while providing reliable clamping force for mounting PCBs, brackets and chassis panels.

Suitable for

• Fastening printed circuit boards to standoffs and mounting plates
• Securing panels and covers inside equipment racks and enclosures
• Repairing and replacing worn or missing M3 hardware in electronics assemblies
• Mounting brackets, cable clamps and small mechanical parts in chassis

Key specifications

• Thread size: M3
• Nominal length: 10 mm
• Material: steel
• Head type: halfscrew (designed for use in confined mounting spaces)
• Intended use: mechanical fastening in electronics chassis and enclosures

How to use

Select a compatible M3 threaded partner such as a tapped hole, nut or standoff. Align the parts to be joined, insert the M3×10 screw and tighten with the appropriate driver until the components are securely clamped; avoid excessive torque to prevent thread stripping or deformation. For repeated assembly, inspect threads and mating parts for wear and replace hardware showing damage or corrosion to maintain reliable connections.

Usage recommendations

Use stainless or coated alternatives if the application requires enhanced corrosion resistance; apply a suitable threadlocker for assemblies subject to vibration. Verify that the 10 mm length does not interfere with internal components or create contact with sensitive circuitry.