M3 x 6 mm Phillips Countersunk Machine Screw, 316 Stainless Steel - CPSA4M3X6

Made in 316 (A4) stainless steel, the Metric Phillips Head Countersunk (Machine) Screw is a machine-thread screw with a flat countersunk head and a Phillips cross recess. The head sits flush in a countersunk hole.

A4 (316) stainless steel contains molybdenum (about 2 to 3 per cent), which improves its resistance to chlorides. It is the grade normally chosen for coastal, pool, marine and food-processing settings, and it costs more than A2 (304). Metric sizes are written M followed by the nominal thread diameter in millimetres, so M10 is a 10 mm thread.

This listing has 79 variants covering sizes M3 to M10 and lengths 6 mm to 100 mm. Variants are supplied in packs of 50 to 100, depending on size.

Austenitic stainless steel is generally non-magnetic, although cold-worked parts can show weak magnetism. 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

• Small sizes for enclosures, instruments and light fittings
• Flush fixings in panels, brackets and plates
• Hinges and hardware that need a flat surface
• Architectural work near the coast
• Coastal and marine installations
• Electrical and instrument enclosures

Features

• Phillips cross recess for common screwdrivers
• Choice of 79 sizes, M3 to M10
• Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment
• A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
• Lengths from 6 mm to 100 mm
• Countersunk head sits flush in a countersunk hole

Key specifications

Selecting the right option

The material needs a countersink cut to suit the head. Use a correctly sized Phillips driver and avoid power drivers at speed. A drop of anti-seize on the thread helps prevent galling. Where chlorides are not a concern, the A2 (304) version costs less: Metric Phillips Head Countersunk (Machine) Screw - 304 Stainless Steel.

Related products

Other versions in this range: BSW Phillips Head Countersunk (Machine) Screw - 304 Stainless Steel and BSW Phillips Head Countersunk (Machine) Screw - 316 Stainless Steel. Matching products: Metric Standard Hex Nut - 316 Stainless Steel and Flat Round Washer DIN125A Stainless Steel.