J-System lock washer DIN9021 PA6.6 white M10, 10.5 x 30 x 2.5

The standard DIN 9021 is known for its wide outer diameter in proportion to the bolt size. As a result, the washer lies over a larger area and can also better distribute the load over larger holes or softer materials. The washer fits an M10 bolt or M10 threaded rod and is often used where a metal washer is not desired.

Nylon washer M10 DIN 9021: for which applications

Plastic washers are usually chosen when the surface must be protected from damage or when metal-on-metal contact is not permitted. Think of painted or coated parts, aluminium components, plastic sheets or wood. A nylon washer can also help electrically isolate a bolt or nut from the component beneath it, although this depends on the complete construction of the joint.

Checking dimensions and sizing

When choosing a washer, the most important factor is the inner diameter, which is slightly larger than the bolt thread. For M10 this is 10.5 mm here. Also look at the outer diameter of 30 mm: it determines how much surface the washer covers, and therefore whether it fits in the available space. The thickness of 2.5 mm is important if you are working to a specific construction or bolt length.

Properties and limits of PA6.6

PA6.6 is a plastic and therefore less rigid than steel or stainless steel. For joints with high preload or heavy loads, a metal washer is generally more suitable. Also take the conditions into account, such as heat and moisture, as nylon reacts differently to these than metal. If you are unsure about suitability for your situation, consult the manufacturer's technical data or ask for advice.

Combining suitable fasteners

A washer works together with a bolt, screw or threaded rod of the same size. In Proffix's fastening range you will find, among others, hexagon head self-tapping screws in A2 stainless steel, such as M10x30. Make sure the bolt size and washer size match so that the washer sits properly centred.

Frequently asked questions

What do the dimensions 10.5 x 30 x 2.5 mean?

These are the inner diameter, the outer diameter and the thickness of the ring in millimetres. The ring therefore has a hole of 10.5 mm, an outer size of 30 mm and is 2.5 mm thick.

For which bolt size is this washer intended?

For M10. The inner diameter of 10.5 mm allows an M10 bolt or threaded rod to pass through easily.

What is the advantage of a nylon washer over a metal washer?

A plastic washer protects the surface against scratches and prevents direct contact between metal parts. Under high load, a metal washer is usually the better choice.