*USED* Hexagon socket head carbon steel zinc plated screws-M4x20

Durable and versatile, these used M4x20 hex socket head cap screws are ready to tackle your next metalwork project. Crafted from carbon steel and finished with a rugged zinc plating, they combine reliable strength with corrosion resistance for indoor use and light-duty applications.

• Size and type: M4 x 20 mm hex socket head cap screws (Allen-drive).
• Material and finish: carbon steel, zinc plated to resist rust and wear.
• Condition: used; suitable for non-precision, replacement, or bulk projects where cosmetic perfection isn’t required.
• Applications: ideal for mounting brackets, enclosures, electronics housings, furniture assemblies, or machine frames where a flush, secure fit is needed.
• Installation notes: standard M4 thread; pair with a 2.5 mm hex key; ensure proper hole diameter and engage threads fully without overpowering the joint.

Why choose these over new or other options? The used stock offers a cost-effective solution for projects that don’t demand pristine appearance but still need dependable clamping power and consistent dimensions. The zinc finish helps keep rust at bay during routine, indoor use, while the uniform 20 mm length makes it easy to plan multi-part assemblies with predictable screw depth.

Who loves these screws? DIY enthusiasts, hobbyists building metal frames, technicians replacing worn fasteners, and workshop pros stocking spare parts for quick repairs. If you’re assembling metal brackets, electronics enclosures, tool racks, or simple hobby machines, these M4x20 hex socket screws provide the right balance of strength, compatibility, and value.