A2-70 304 Stainless Steel Allen Hex Socket Flat Countersunk Head Self-Tapping Wood Screw M2–M6

A2-70 304 Stainless Steel Allen Hex Socket Flat Countersunk Head Self-Tapping Wood Screw M2–M6

The A2-70 304 stainless steel Allen hex socket flat countersunk self-tapping screw delivers a completely flush finish when installed in countersunk holes in wood, MDF, plastic, and thin aluminium. The hex socket drive provides superior torque over Phillips without cam-out, and the self-tapping thread eliminates the need for pre-tapping in soft materials.

Key Specifications

Why Choose This Countersunk Self-Tapping Screw?

• Flush countersunk head — sits completely flush with the surface; no protruding head to snag cables or interfere with mating parts
• Hex socket drive — no cam-out; higher torque than Phillips; works with standard Allen keys and hex bit drivers
• Self-tapping thread — cuts its own thread in wood, MDF, plastic, and thin sheet; no pre-tapping required
• A2-70 304 stainless — corrosion-resistant; suitable for indoor electronics, outdoor panels, and humid environments
• M2–M6 range — covers all standard electronics and light mechanical assembly sizes

Typical Applications

• Electronics enclosure panel assembly requiring flush screw heads (aluminium, ABS, polycarbonate)
• Speaker cabinet and audio equipment assembly (wood/MDF) — flush finish for grille and baffle mounting
• 3D printer enclosure and frame panel fastening
• Robotics chassis and servo bracket mounting with flush surface requirement
• Furniture and cabinetry assembly where protruding heads are unacceptable
• PCB bracket and DIN rail mounting in control cabinets

Compatible With

• Allen keys / hex bit drivers: M2=1.5mm, M3=2mm, M4=2.5mm, M5=3mm, M6=4mm hex
• Countersink drill bits: 90° countersink for correct flush seating
• Materials: wood, MDF, ABS, polycarbonate, HDPE, thin aluminium sheet (up to 1.5mm)
• Electric screwdrivers with hex bit adapters

Package Contents

• Self-tapping screws in selected size and quantity (per variant)

Frequently Asked Questions

Q: What countersink angle do I need for these screws?

A: These screws use a 90° countersink angle (standard for metric flat head screws). Use a 90° countersink drill bit to prepare the hole for a flush finish.

Q: Can I use these in metal?

A: Yes, in thin sheet metal up to approximately 1.5mm. For thicker metal, pre-drill a pilot hole and use a 90° countersink bit. For structural metal fastening, use machine screws with a tapped countersunk hole.

Q: What is the difference between this and the wafer head version?

A: The countersunk head sits flush with the surface when installed in a countersunk hole, giving a completely flat finish. The wafer head sits on top of the surface with a very low profile but does not recess into the material.