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When you're dealing with heavy vibration in industrial machinery or automotive assemblies, these external tooth washers basically dig into the mating surface and hold tight — it's what they do best.
We push out about 5 million pieces a month, so lead time is usually pretty short, and the MOQ sits at 1000 pieces which works for most buyers.
Most of the demand we see runs from M3 up to M16 for standard industrial use, and for common sizes we typically have stock ready, though anything above M20 might need a bit more notice.
You can choose from zinc plated, dacromet, or black finishing depending on your corrosion requirement (check your enviornment), and the carbon steel variant handles most applicaions better than reagent grade alternatives for this.
One thing buyers often don't ask about is that these washers work best against hardened surfaces — softer metals like aluminum can actually deform under the teeth, and I've seen that cause issues.
Sizes range from M1.6 to M30 with all teh common internaional standerds covered, but it's the external teeth design that really prevents loosening under loads, and we've got ISO and TUV certs backing up batch consistency.
Standard orders up to 1 million pcs usually ship within 15-20 working days. If you need faster delivery, just let us know and we can adjust the schedule.
Yes, you can mix carbon steel and stainless steel or different finishes like zinc and Dacromet in one order, as long as the total hits 1000 pcs. We'll handle the split.
Absolutely, we include a TUV material certificate with every production lot. Just specify it when you place the order, and we'll send it along.
For M6, the external teeth diameter is 12.5 mm with a ±0.3 mm tolerance, and the inner hole is 6.4 mm ±0.1 mm. We follow DIN 6797A strictly, so all sizes match the standard.
Yes, we can pack them in bulk cartons or customize packaging like plastic bags or boxes to fit your line. Just tell us your preference when ordering.
