Project Description

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Custom long hex nut hex coupling nut DIN 6334 standard

The fasteners item is long coupling nut. Coupling nuts, also called extension nuts, are used to join two threaded rods or pipes, including threaded rods or pipes of different sizes.

Overall Dimensions:

  • Standard: DIN6334, ANSI, BSW
  • Material: Carbon steel, stainless steel
  • Size: M3-M56, 3/16-1″ -1/2
  • Surface: Plain, zinc plated, black, HDG

Custom long hex nut hex coupling nut DIN 6334 standard


  • Main Product: Long Coupling Nut
  • Material: Carbon Steel, Stainless Steel
  • Standard: DIN6334, ANSI, BSW
  • Class: Gr4.8, 8.8, 10.9, 12.9
  • Size: M5-M56, 3/16-1″ -1/2.
  • Surface Treatment: Z.P, PLAIN, BLACK, HDG, Xylan
  • Packing: Bulk, 25kg and 15kg or small boxes and then plan or according to cusomers’ requirement.
  • Our capacity of production could be achieved 800MT per month now and we always control the delivery in 30 days.

FAQ-Custom long hex nut hex coupling nut DIN 6334 standard

Q: Do you have a minimum quantity?

A: Yes. 1 Ton for each size of each item.

Q: What is your delivery time?

A: It depends on your quantity, normally our production time is 20 days for one container(25 tons). And delivery time usually within 30 Days. 

Q: Can you provide certificates?

A: Yes, threaded rods are EN-ISO10204 3,1 proved. And other certificates could be provided by Third-party.

FAQ -Our Company

Q: Are you trading company or manufacturer ?

A: We are factory produce hardware and metal items. We also do trading for other fasteners on request and purchase from our partner factories, which have competitive price in the market.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 20-30 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample with some cost, and will be returned after your first order.  /Some of samples are free

Q: What is your terms of payment ?

A: T/T, L/C, etc. For first cooperation, we usually do T/T with some deposit. We need deposit to lock the material and for basic production.

If you need company profile and catalogs, please feel free to contact with us.