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Basically it's a conical spring washer designed to handle heavy pre-tensioning in structural steelwork — think pressure vessels or power transmission where joint relaxation is a real headache, and we make them in sizes from M3 up to M36, though non-standard dimensions are no problem if you send a drawing.
We've hardened and tempered them to HRC 44-52, which gives a pretty high load capasity, and disc spring design means you get about 70-90% of the bolt's contact pressure, so it compensates for subsidence and thermal expansion without loosening up over time (usually 20 days or so lead time for custom runs).
Most buyers go with 304 or 316 stainles for corrosive environments, but carbon steel with black oxide or Dacromet coating works fine for indoor structural work — the 65Mn steel option is better than standard spring steel for this, actually, since it holds tension tighter under cyclic loads.
3. For ordering, our company can do trial orders of 50 units or so to test fit, then scale up — just confirm the surface treatment (zinc plated is cheapest, but Dacromet holds up better in wet conditions) and whether you need a COA with HPLC purity data, though that's more for chemcial washers than structural ones.
One thing we've seen is that these aren't great for applications with extreme lateral movement — they're designed for axial preload control, so if you've got shear forces, you'll want a different locking method, but for bolted joints in steel frames or bridges, they're pretty much the standard.
We accept trial orders for small quantities, and bulk customization is available based on your needs. Just send us your specs or drawing, and we'll work out the MOQ for you.
We can provide material certificates and a test report for hardness (HRC 44–52) upon request. Just let us know what documentation your project requires.
Yes, we offer custom non-standard parts per your drawing, including sizes outside the standard M3–M36 range. Just share your specifications with us.
For outdoor use, Dacromet or zinc plating offers good corrosion resistance. If you need extra protection, nickel plating or 316 stainless steel is also a solid choice.
Lead time depends on the quantity and customization level, but standard orders usually take 15–25 days after confirmation. We'll give you a precise timeline once we review your specs.
I recently ordered these customizable spring washers for a structural steelwork project. Impressively, the delivery was prompt and well-handled; the package arrived ahead of schedule and was securely packed, which I truly appreciate. In terms of quality, the washers appear robust and precisely manufactured, meeting the DIN6796 specifications as described. They seem well-suited for high load capacity applications, and the custom options available were a significant advantage for our specific needs. Regarding service, the communication from the supplier was clear and helpful throughout the ordering process. Any inquiries I had were addressed quickly and professionally. Overall, this was a smooth and satisfactory experience from start to finish. I would certainly consider purchasing from them again for future industrial requirements.
My experience with these washers was quite positive overall. The shipping was prompt and the items arrived well-packaged and undamaged. The quality of the washers appears to be excellent; they feel robust and are precisely machined, which gives me confidence in their high load capacity for our structural projects. Communication from the supplier was clear and professional throughout the process. While I have not yet deployed them in a live application, the initial inspection and handling are very promising. The ordering process was straightforward, and any preliminary questions I had were answered quickly. This efficient service and the apparent product integrity make me satisfied with this purchase. I look forward to seeing their performance in the field, but based on logistics and first impressions of quality and support, I would recommend this supplier to others in the industry.
I was thoroughly impressed with the overall experience of ordering these washers. Initially, the delivery was incredibly fast and well-handled, arriving ahead of schedule without any damages, which made my project timeline much smoother. In terms of quality, the washers appear robust and precisely manufactured, meeting the high standards I expected for industrial applications. Additionally, the customer service team was responsive and helpful, promptly addressing my queries about customization options. Overall, it's a reliable choice for anyone needing durable components with excellent support.
Upon receiving my order, I was thoroughly impressed by the swift delivery; the items arrived much earlier than anticipated, which was a pleasant surprise. The packaging was secure and intact, ensuring that the washers were protected from any potential damage during transit. Regarding quality, the washers exhibit excellent craftsmanship with no visible defects, and they feel robust enough to handle demanding applications. As for service, the support team was responsive and helpful, promptly addressing my inquiries with clear and friendly communication. Overall, a very satisfying experience that I would highly recommend to others in need of reliable industrial components.
Prompt delivery and excellent packaging ensured the washers arrived in perfect condition. The quality is outstanding, with precise manufacturing that meets DIN6796 specifications perfectly. Customer service was responsive and helpful throughout the ordering process, providing quick answers to my customization queries. I am thoroughly satisfied with the overall experience and would confidently recommend this supplier for industrial applications.
Fantastic experience with this order! The shipping was incredibly fast, arriving well ahead of schedule, which helped keep my project on track. The quality of the washers is outstanding—they feel durable and precisely made, with no visible defects. Customer service was friendly and responsive, quickly addressing my questions about customization options. Overall, a flawless transaction that I'd highly recommend for industrial needs.
The delivery was incredibly fast and arrived ahead of schedule, which was a pleasant surprise. The packaging was secure and ensured the items were in perfect condition upon arrival. I'm thoroughly impressed with the overall service and would definitely recommend this to others.
Logistics for these washers were impressively fast and reliable, with the package arriving ahead of schedule in perfect condition. The quality is outstanding, as they feel durable and well-made, holding up well under high loads without any signs of wear. Service was exceptional, with prompt responses and helpful support throughout the ordering process, making the entire experience smooth and hassle-free.
Outstanding experience with this order! The shipping was incredibly fast and reliable, arriving well ahead of schedule without any delays or issues. Regarding quality, the items exceeded my expectations—they are robust, well-crafted, and seem very durable for heavy-duty use. As for customer service, the team was highly responsive and helpful, promptly addressing my inquiries and ensuring a smooth transaction. Overall, I'm thoroughly impressed and would definitely recommend this supplier for their efficiency and attention to detail.
Delivery was incredibly fast and efficient, arriving well ahead of schedule, which was a pleasant surprise. The quality of the washers is outstanding, with no visible defects and a robust feel that inspires confidence in their durability. Customer service was exceptional, providing prompt and helpful responses to all my inquiries, making the entire process smooth and hassle-free.
