*USED* Hexagon socket head carbon steel black zinc plated screw assembly M4*8; ES1LD; K014

Upgrade your fastener options with this used Hexagon Socket Head Cap Screw, sized M4x8. Made from durable carbon steel and finished in black zinc plating, it delivers solid strength and corrosion resistance in a compact, low-profile form. Identified by ES1LD and K014, this screw is a reliable choice for budget-conscious projects where performance matters, not just appearance.

Key details at a glance

• 
  Type: Hexagon socket head cap screw
• 
  Size: M4 thread, 8 mm length
• 
  Material & Finish: Carbon steel with black zinc plating for added durability
• 
  Drive: Requires a 2.0 mm hex key (Allen key)
• 
  Condition & identifiers: Used; ES1LD; K014

Why this used screw can be the right move

For non-critical assemblies, repairs, and hobby projects, a used M4x8 hex socket head cap screw can offer substantial cost savings without compromising functional reliability. The black zinc finish helps resist minor corrosion in typical indoor environments, keeping threads clearer and installation smoother over time. It’s an ideal replacement part when you want immediate availability and predictable performance at a lower price point.

Ideal applications

• Furniture repairs and assemblies where a discreet, flush-minish fastener is preferred
• Electronics enclosures, lightweight machinery, and hobby robotics frames
• Small appliance or mounting brackets where a secure, rattle-free fit is needed

Practical installation tips

• Inspect the threads and seating surface before installation to ensure clean engagement with a compatible tapped hole or nut
• Use a properly sized 2.0 mm hex key to avoid rounding the socket
• Avoid using this screw in high-load, safety-critical applications where maximum strength is required
• Pair with compatible hardware in the same metric standard to maintain consistent torque and fit

With its combination of practical size, corrosion-conscious finish, and the tangible value of a used part, this M4x8 hex socket head screw is a smart addition to any hardware drawer. It’s ready to support your everyday fixes, upgrades, and DIY builds—while helping you stretch your toolkit without compromising on reliability.