Internal Teeth Serrated Lock Washer

The internal teeth serrated lock washer has a serrated shape inside to increase friction and facilitate reinforcement. In the case of vibration due to external forces, it can be locked better. There are a variety of materials to choose from, and you can choose the appropriate material according to the use environment and specific needs.

Material

The material for internal teeth serrated lock washers depends on what you’re using them for. For heavy-duty jobs, high-carbon steel (like Grade 8 or 10.9) is the strongest option. Stainless steel (A2 or A4 grades) works well in marine environments or industries with chemicals because it doesn’t rust easily. If you need something non-metal,for example, to conduct electricity or keep things light,brass or titanium are good choices. Some washers have special coatings, like Dacromet or Geomet, to prevent rust without making the teeth dull. Every material grade goes through strict testing to meet standards like ISO 898 or ASME, so you know they’ll hold up under the pressure they’re rated for.

Extended service life

To make internal teeth serrated lock washers last longer, check them for worn teeth, rust, or flattening before reusing. Use a wire brush to clean out any dirt or debris from the teeth. Don’t over-tighten them, since that can bend the washer out of shape. If the teeth are worn down (rounded) or the surface has small pits (pitting), replace the washer. You usually don’t need to lubricate them, but it’s okay to add grease or oil in high-temperature setups if needed. Store them in dry places to keep them from rusting. Check the bolts or nuts connected by the washers regularly and tighten them in time if any looseness is found.

Replacement frequency

Q:Are internal teeth serrated lock washers reusable, or should they be replaced after disassembly?

A: Internal teeth serrated lock washers lose their tightness and the sharpness of their teeth after being compressed. This makes them less good at keeping things locked. If you reuse them, there's a risk that the load won't be spread out properly and the parts might come loose.

You should always replace internal teeth serrated lock washers after taking them apart to keep things safe and working well.