M4 × 20mm Countersunk Pozi Machine Screw Set (DIN 965) + Hex Nut (DIN 934) – Bright Zinc Plated

DIN 965 Countersunk Pozi Machine Screws & Hex Nuts Set

Fully threaded DIN 965 countersunk Pozi machine screws supplied with matching hexagon nuts for flush, secure fastening.

Key Benefits & Features

• DIN 965 countersunk (flat) head for a flush finish in matching countersunk holes.
• Pozi drive for controlled tightening (drive sizes vary by thread size).
• Fully threaded machine screw for consistent thread engagement along the shank.
• Supplied with matching hexagon nuts (standard metric threads).
• Metric coarse pitches listed for each size.
• Stock photos: images are for illustration only.

Use Cases

• Flush fixing in sheet metal, brackets and panels
• Through-bolting with nut access on the reverse side
• General repairs, assemblies and fixtures
• Machinery guards/covers and removable panels

What’s in the Box

• Countersunk Pozi machine screws (size/length as selected)
• Matching hexagon nuts (spanner size depends on thread size)

Compatibility / Fittings

• Uses standard metric threads; match the nut to the same M size.
• Countersunk head requires a matching countersunk hole for a flush finish.
• Driver required: Pozi PZ-1 / PZ-2 / PZ-3 depending on size.

Installation & Tips

• Choose the correct M size and pitch for your existing hole/nut (see Variants).
• Ensure the hole is properly countersunk so the head seats flush.
• Use the correct Pozi bit: PZ-1 (M3), PZ-2 (M4–M5), PZ-3 (M6–M8).
• Hold the nut with the correct spanner size while tightening from the screw side.
• Tightening torque depends on material and application.