Metal oval washer RB-O Bossong

What it is

The RB-O oval metal washer by Bossong is a galvanised steel component designed for direct powder-actuated fixing in building. With dimensions of 82×40 mm and a domed profile with a central countersink, this washer ensures optimal distribution of clamping forces, reducing the risk of damage to the substrate materials. Ideal for work on timber, metal or masonry structures, it suits residential, industrial and renovation settings where a robust, durable solution is required.

A washer is a perforated disc placed under the nut or screw head to spread the load, prevent loosening or insulate the fixing.

What it is for

Used for powder-actuated fastening into concrete and steel and for mechanical fixing of structures and components to walls, ceilings and floors.

How to use it

Choose an inner diameter matching the screw or threaded rod and a compatible material (zinc-plated, stainless steel, plastic). Place flat washers and penny washers under the nut to avoid damaging the substrate and to spread the pressure; place the spring washer under the nut, where it is flattened on tightening to resist vibration loosening. Use seismic washers only with the anchor they are certified for.

Where it is used

• Commercial construction
• Industrial construction
• Residential construction

Technical data

• Material: Galvanised steel
• Shape and dimensions: Domed oval, 82×40 mm
• Construction feature: Central countersink for better grip

Who it is for

Designed for formwork carpenters, insulation installers, waterproofing specialists and construction workers.

Related products

• Metal washer for construction Bossong
• Metal domed washer RB Bossong
• Stainless steel A2 nut for construction Bossong — from the category Hex Nuts
• Threaded rod, stainless A2, 1 m, Bossong — from the category Threaded Rods
• Hex head screw M8 Makita — from the category Bolts and Metric Screws
• Browse the whole category: Flat Washers

Before you order

Tell us the quantities you need and the intended use: if there is a more suitable version, or an equivalent available sooner, we will let you know.

For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.