Long Nuts / Coupling Nuts

The Long Nuts / Coupling Nuts are produced by cold forging then tapping thread. They usually have right thread and left thread on different ends, then you can tighten in one direction. Looking forward to cooperating with you.

Material:
Carbon Steel: Q235, 1035, 10B21, 1045and etc.
Alloy Steel: 40Cr, 42CrMo, SCM435
Stainless Steel: 201, 304, 316 and etc.
If you need any other special material, please tell us.
Thread:
Metric thread, American standard thread and any special thread.
We can supply M6 to M20 normally, if you want to bigger or others special, please tell us.
Finish:
Zinc plating, passivated white, yellow, black and green.
Zinc-Nickel plating.
Nickel plating.
Stainless steel passivated.
Black oxidation.
Geomet and Magni.
Nylok.
Heat Treatment:
Through harden.
We can give you advise according to your actual application.
Tolerance:
According to DIN2768 standard.

Our supplier and we have the Certificate of  ISO 9001 : 2015.
We can provide Dimension Certificate, Surface Treatment Certificate, Heat Treatment Certificate, ISIR, PPAP3 and etc.

Packing Details: Poly bags in cartons, put into plywood cases or pallets.
We can also provide special requirement according to customers.
We will confirm the delivery date when signing orders.
Shipped by Sea: FOB or CIF and etc.
We have our forwarder or we can cooperate with customers’ forwarder.
Shipped by Air: DAP or DDU, door to door and etc.
We always use DHL, UPS, FedEx, TNT and etc. If the weight is heavy, we will ship by forwarder which will be cheaper.
If you have urgent requirement, we will try our best to do something help you.