M8 Hex Coupling Nut, 316 Stainless Steel - CNUA4M8

The Metric Hex Coupling Nut, 316 Stainless Steel is a long hex nut with an internal thread through its full length. It joins two lengths of threaded rod or a rod and a bolt end to end.

This listing has 8 variants covering sizes M5 to M30.

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.

Austenitic stainless steel is generally non-magnetic, although cold-worked parts can show weak magnetism. Use stainless washers and nuts with stainless fasteners, so the whole joint is made of the same material.

Where this product is used

• Small sizes for enclosures, instruments and light fittings
• Extending allthread runs and hangers
• Architectural work near the coast
• Larger sizes for frames, plant and structural fixings
• Joining threaded rod end to end
• Adjustable tie rods and supports

Features

• Hex form for spanner tightening
• A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
• Long thread engagement joins two threaded ends
• Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment
• Choice of 8 sizes, M5 to M30

Key specifications

Selecting the right option

The nut depth is listed on each variant. Thread both ends in until they meet or are fully engaged. Use anti-seize on the thread.

Related products

Often used with: Allthread Rod 316 Stainless Steel.