M5 Square Nut, 316 Stainless Steel - SNUA4M5

Made in 316 (A4) stainless steel, the Square Nut is a four-sided nut. It sits against a flat face and resists turning in a channel or slot.

This listing has 5 variants covering sizes M5 to M12. Pack quantities depend on size: packs of 50 to 100.

The A4 (316) grade is stainless steel with added molybdenum, which helps it hold up where salt, pool chemicals or washdown chemicals are present. It is the more corrosion-resistant of the two common stainless grades, at a higher cost than 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

• Older equipment and machinery fitted with square nuts
• Outdoor fittings exposed to salt air
• Strut and channel fixings
• Food and beverage processing equipment
• Timber and general fabrication
• Larger sizes for frames, plant and structural fixings

Features

• Matches bolts of the same thread
• Pack quantities to suit trade and bulk buying: packs of 50 to 100
• 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 M5 to M12 in 5 variants
• Square form is held by a channel or slot

Key specifications

Selecting the right option

Match the thread to the bolt and check that the nut width suits the channel it sits in. Use anti-seize on the thread.