Upgrade your project with these used Cross Recessed Countersunk Head Tapping Screws ST3.5×13. Designed for clean flush mounting and dependable self‑threading, these screws pair a Phillips cross recessed drive with a flat countersunk head to deliver a professional, low-profile finish on metal or sturdy plastics.

• Drive type: Phillips cross recessed, providing a stable seating and reduced cam-out during installation.
• Head style: Countersunk (flat) head for a smooth surface that sits flush with your material.
• Size: ST3.5×13 (approximately 3.5 mm diameter, 13 mm length) self‑tapping screws.
• Condition: Used. May show prior handling or installation marks, but core threading and drive geometry remain suitable for reuse in non‑critical applications.
• Batch/Code: K023
• Ideal applications: Electronics enclosures, cabinetry, lightweight metal brackets, appliance repairs, or any project where a flush, self‑tapping fastener is preferred and exact cosmetic perfection isn’t required.

Why choose these used screws? They offer real cost savings for bulk repairs and hobby projects without sacrificing the essential functionality: reliable self‑tapping performance, a secure grip in softer metals or plastics, and a clean, unobtrusive finish when installed correctly. For best results, pair with a compatible pilot hole when working with harder materials, and drive with controlled torque to maintain thread integrity and flush seating.

Practical tips for success: start with a pilot hole sized for 3.5 mm screws in the chosen material, align the screw straight to avoid cross-threading, and stop once the head sits flush against the surface to preserve the intended appearance and load distribution.