Grade 10.9 Belleville Spring Washer M3.5 Bevel Black Phosphate Din6796

M3.5 disc spring washer Anti Loosening conical lock washer belleville washer DIN6796 with phosphate for bolted connection

Spring washers are used to compensate for subsidence formation in screw connections and to prevent a loosening or unfastening of the connection. The locking effect is purely frictional.

The special shape (formed like a disc spring) enables the washer to achieve a high spring effect. The spring force resulting from the flattening load washer amounts to 70–90% of the corresponding contact pressure of a screw of grade 8.8–10.9.

The design and manufacture method of these washers make them offer great forces in short travels. It should never be forgotten that their elastic capacity is limited. This is why they are preferred to work under static loads, where they can maintain the pressure over time.

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FAQ

Q: Are you trading company or manufacturer?

A: We are factory.

Q: What is your payment method?
A: T/T. For small order less than 1000USD, 100% in advance to reduce the bank charges. For order more than 1000USD, 30% in advance and balance before shipment.

Q: Can you provide a sample?
A: Yes, our sample is provided free of charge, but not including the cost of freight.

Q: What's your delivery time?
A: Generally 15 days if the goods are in stock. If not in stock we’ll need 30 working days to produce. It depends on quantity.

Q: How to Custom-made?
A: If you have a new product drawing or a sample, please send to us, and we can custom-made for you. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.

Q: Which mode of transport would be better?
A: In general, we advice to make delivery by sea. Also we respect your views of other transportation as well.