M20 NFE25511 Carbon Steel stainless steel Grooved Conical Serrated Disc Spring Washers Knurling Disc Spring Lock Washers French standard washers Disc Serrated Self-locking Washers
Lock washer is an elastic washer, a strong flat spiral spring of one or two turns that is sharp-edged at the ends and used as a nut-locking device.
After installing a spring washer on bolts or screws, the contact area is increased, which can disperse pressure and protect the surface of the connected parts from being damaged. It's widely used in electric control cabinet, electrical equipment,railway,etc.
| Material | steel |
| Finish | plain, phosphate, zinc, dacromet, etc. |
| Shape | round |
| size | 20mm |
| Model No. | NFE25511 |
| Hardness | as per the standard |
| Certificate | ISO9001 |
| MOQ | negotiable |
| Price | negotiable |
| Place of origin | Anhui, China |
| Freight | by sea |
| Shipping | FOB Shanghai |
| Lead time | 30 days |
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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.
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Round Conical Contact Serrated Washer Din M20 Lock Spring Washer Carbon Images
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