M12 Flat Round Washer, 304 Stainless Steel - FRWA2M12

The Inox Standard Flat Round Washer, 304 Stainless Steel is available in 9 sizes (M6 to M30) and is a flat ring that spreads the clamping load of a nut or bolt head and protects the surface being fixed.

This listing has 9 variants covering sizes M6 to M30. Pack quantities depend on size: packs of 20 to 100.

A2 (304) stainless steel is the common general-purpose austenitic grade. It resists corrosion well indoors, in fresh water and in most general outdoor conditions, but it is not recommended where chlorides are present, such as coastal, pool and marine settings. Choose A4 (316) there. 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. In wet conditions, keep stainless steel apart from aluminium and galvanised steel with a washer or sleeve, to reduce the risk of galvanic corrosion.

Where this product is used

• Bridging oversize or slotted holes
• Small sizes for enclosures, instruments and light fittings
• Indoor architectural and joinery work
• Kitchen, bathroom and laundry fixtures
• Larger sizes for frames, plant and structural fixings
• Under nuts and bolt heads to spread the load

Features

• Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment
• Spreads clamping load under bolts and nuts
• Protects the surface from damage
• Range covers M6 to M30 in 9 variants
• A2 (304) stainless steel for indoor, fresh water and general outdoor use
• Pack quantities to suit trade and bulk buying: packs of 20 to 100

Key specifications

Selecting the right option

Match the washer to the fastener size, and check outer diameter and thickness for the load. Washers are listed by the size of bolt they suit. Use stainless washers with stainless bolts to avoid mixed-metal corrosion. For coastal or chloride-exposed use, choose the A4 (316) version: Flat Round Washer DIN125A Stainless Steel.

Related products

Also available: Inox Standard Flat Round Washer - 316 Stainless Steel and Metric Flat Round Washer - 316 Stainless Steel. Matching products: Metric Hex Bolt - 304 Stainless Steel, Metric Hex Set Bolt (Full Thread) - 304 Stainless Steel and Metric Standard Hex Nut - 304 Stainless Steel.