*USED* Hexagon Socket Head Carbon Steel Screws with Flat Washers Assemblies M4x16

Used Hexagon Socket Head Carbon Steel Screws with Flat Washers, M4x16 — a practical, ready-to-install fastening solution for metal frames, brackets, enclosures, and small machinery. The combo of a hex socket (Allen) head and a flat washer delivers a clean, flush profile while distributing clamping force to protect delicate surfaces. Sized at M4 diameter with a 16 mm length, these screws are well-suited for compact assemblies where reliable strength and precise fit matter.

• Size & drive: M4 × 16, hexagon socket head (Allen drive), carbon steel construction.
• Washer included: flat washers accompany each screw to evenly spread load and shield mounting surfaces.
• Condition: USED; may show minor signs of previous use, but threads and overall function are intended for reuse in typical applications.
• Ideal applications: electronics enclosures, 3D printer frames, DIY projects, brackets and light-to-medium duty assemblies where a compact, high-strength fastener is preferred.
• Benefits in practice: washer-assisted load distribution reduces pull-through and surface indentation, while the socket head provides strong engagement and a clean, low-profile finish.

Tips for optimal use: align parts precisely, insert with the washer in place, and tighten with the appropriate hex key to a controlled torque to avoid over-tightening. If moisture or corrosive environments are a concern, consider separate corrosion-resistant options for long-term applications, but for general purpose use these M4x16 hex socket screws with flat washers offer dependable performance and convenient installation in a single assembly.