Fasteners Selector
Penny Washers - DIN 9021
Also called repair / timber / mudguard / washer
DIN 125 - Flat Washer, these are a thin circular plate with a central hole. They are used to distribute the load of a threaded fastener for example a nut or bolt.
BZP - Bright Zinc Plated
Galvanised
T304 (A2) Stainless Steel
T316 (A4) Marine Grade Stainless Steel
Spring Washer, these are a thin circular plate with a central hole but have a split in and bent into a helical shape. They are used to increase the force between the male and female thread increasing friction and therefore resistance to rotation, hence they are sometimes referred to as lock washers.
Form A : Serrated Lock washers
BZP - Bright Zinc Plated
Galvanised
T304 (A2) Stainless Steel
T316 (A4) Marine Grade Stainless Steel
Metal and Nylon spacers / washers, can be used to stop wear on a certain component or simply to fill a space for example holding a panel off a wall.
Plastic Fasteners
Stainless Steel Plate Washers
Hemispherical Washers are half a sphere with a hole perpendicular to the flat side which corresponds to the thread size you will use it with. They are used alongside hemispherical cups which sit together allowing for up to 10 degrees movement from the vertical.
Hemispherical Cups are cylindrical with part of a sphere cut out of one side with a hole in the center that corresponds to the thread size being used. They are used alongside hemispherical washers which sit together allowing for up to 10 degrees movement from the vertical.
BZP - Bright Zinc Plated - A 3 micron plating is applied to the steel to give a shiny finish. Although it does afford some protection this is best suited to an indoor use.
Solid Screw Cup Finishing Washers
Rubber / Silicone Washers made from low friction silicone rubber
Special Washers