M3 x 6 mm Countersunk Slotted Machine Screw, 316 Stainless Steel - CSSA4M3X6

The CSK Slotted Machine Screw, A4 (316) Stainless Steel is a machine-thread screw with a flat countersunk head and a single slot. The head sits flush in a countersunk hole.

This listing has 50 variants covering sizes M3 to M8 and lengths 6 mm to 50 mm. Every size comes in packs of 100.

Made from 316 (A4) stainless steel, the grade normally specified for chloride-exposed work such as coastal installations, swimming pools, marine fittings and food-processing plant. Metric sizes are written M followed by the nominal thread diameter in millimetres, so M10 is a 10 mm thread.

Stainless threads can gall (seize) when tightened under load or at speed. A smear of anti-seize on the thread and a steady tightening speed reduce the risk.

Where this product is used

• Coastal and marine installations
• Small sizes for enclosures, instruments and light fittings
• Chemical and washdown areas
• Repairs and replacement of older equipment
• Marine and coastal fittings
• Hardware, hinges and fittings that need a flat surface

Features

• Countersunk head sits flush in a countersunk hole
• Takes a flat-blade screwdriver
• Lengths from 6 mm to 50 mm
• A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
• Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment
• Range covers M3 to M8 in 50 variants

Key specifications

Selecting the right option

The material needs a countersink cut to suit the head. Use a flat-blade driver that fills the full slot width.