Meet a practical, budget-friendly fastener that combines a secure lock with straightforward compatibility: a used M6x25 screw with a hex head and a built-in spring washer. Sized for clean, reliable joins, this fastener tackles everyday assembly tasks where vibration or movement is a factor—without breaking the bank.

Key specs at a glance

• Diameter and length: M6 thread, 25 mm long
• Head style: external hex head for solid wrench engagement
• Locking feature: integrated spring washer to maintain preload and resist loosening
• Condition: used, inspected, and offered for value-driven projects
• In the package: screw accompanied by a spring washer (as described)

Why a hex head screw with a spring washer matters

• The spring washer adds a reliable locking action, helping prevent loosening under vibration, thermal cycling, or dynamic loads
• The 6 mm diameter and 25 mm length strike a balance between compact installation and holding power, making it versatile for metal and sturdy wood assemblies
• Being a used part, it delivers cost savings for projects where exact-new hardware isn’t required, while still delivering dependable performance

Ideal use cases

• Securing panels, brackets, or mounts in furniture, tool chests, or workshop cabinetry
• Mounting accessories to enclosures, hobbyist project boxes, or equipment housings that experience movement
• Attaching components to metal frames or wooden structures where vibration resistance is beneficial

Installation and care tips

• Use a compatible hex driver or wrench for external hex heads to ensure a snug, cam-out-free fit
• Pair with an M6 nut or a clean, tapped hole to achieve proper engagement
• Ensure the spring washer sits flat against the surface to maximize locking effectiveness
• Inspect threads and the washer for wear given the used condition, and test fit before applying any load

Who this is for

• DIYers and hobbyists seeking reliable fastening at a thoughtful price point
• Repair projects that require a matching M6x25 size with lock—without the cost of brand-new hardware
• Projects where a compact, vibration-resistant fastener can prevent loosening and extend assembly life