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It is a machine screw with a flat top cone shaped head and a Phillips cross recess drive. The head is designed to sit flush with or slightly below the work surface. The Phillips drive gives you good tool centering and moderate torque transfer.
The main reason is appearance. When you countersink the hole correctly, the head disappears into the surface. No protruding parts. No snagging. No scratches on finished surfaces. This makes flat head screws the standard choice for finished products where looks matter.
The head is machined to an 82 degree cone angle. This matches standard countersink bits. When the hole is countersunk correctly, the head sits perfectly flush. Not too deep. Not too shallow. Just right.
The cross shaped recess does more than just look like a plus sign. It centers the screwdriver automatically. This means you do not have to fumble around trying to get the bit lined up. It also reduces cam out compared to slotted drives. You get better torque transfer with less slipping.
Metric sizes from M2 up to M6. Lengths from 3mm to 80mm. The most common sizes are M3, M4, and M5. Inch sizes are also available upon request.
Stainless steel 304 for general corrosion protection. Stainless steel 316 for marine and saltwater environments. Brass for non-magnetic and decorative applications. Zinc plated steel for budget friendly indoor use. Aluminium for lightweight projects.
Class 4.8 for light duty general assembly. Class 6.8 for moderate loads. Class 8.8 for heavy duty industrial work. Class 10.9 and 12.9 for high strength demanding applications.
Electronics enclosures where you want a clean finish. PCB mounting where you need to secure boards without damaging them. Instrument panels where appearance matters. Machinery covers for safety guards. Automotive interiors where parts need to sit flush. Furniture where you do not want screws sticking out. Signage where you mount things to walls.
Drill a pilot hole for the threaded portion. Use an 82 degree countersink bit to create the recess for the head. Drive the screw with a Phillips screwdriver that matches the size. Stop when the head is flush with the surface. Do not overtighten.
ISO 9001 and ISO 10012 certified. Every batch inspected. Countersink angle checked. Thread gauging. Hardness testing.
YH Fastener has been manufacturing precision fasteners since 1998. Our range includes Phillips flat head machine screws, self tapping screws, shoulder screws, and custom fasteners. ISO 9001 and ISO 10012 certified. Every batch inspected. Factory direct. Ship to 60+ countries.
Send us your drawing or sample. Tell us your size, material, and quantity. We will reply within 24 hours. OEM and custom orders welcome.
