Which standards do your pipe fittings and flanges comply with?

We manufacture to ASME B16.5, ASME B16.47, ASME B16.36, ASME B16.9, ASME B16.11, MSS SP-97, EN 1092-1, BS 10, DIN, JIS, ISO and API standards, with materials certified to the relevant ASTM / ASME specifications such as ASTM A182, A105, A234, A403, A350 and A420.

Do you supply mill test certificates with every order?

Yes. Every shipment is supplied with EN 10204 3.1 mill test certificates, and each piece is marked with its heat number so chemistry and mechanical properties can be traced back to the original melt. Third-party inspection by the buyer's nominated agency can be arranged on request.

Which materials do you keep in ready stock?

We hold ready stock in stainless steel (304, 304L, 316, 316L, 904L), duplex and super duplex, carbon steel (A105, A234 WPB, A350 LF2), alloy steel (F11, F22, WP11, WP22) and nickel alloys including Inconel, Hastelloy, Monel and Incoloy, as well as titanium grades.

Can you manufacture custom or non-standard piping components?

Yes. We produce custom-made piping connections to customer drawings, including sizes larger than 4 inch, special bores, non-standard pressure classes and open die forgings.

What fastener sizes and grades can you produce?

We produce high tensile bolts and nuts from M20 to M72 in metric and 3/4 inch to 3 inch in UNC, in property classes 8.8, 10.9 and 12.9, as well as ASTM A193 B6, B7, B8, B8M stud bolts and ASTM A194 2H heavy hex nuts.

Which countries do you export pipe fittings and flanges to?

Our main export markets include the UAE, Saudi Arabia, Qatar, Oman, Turkey, Egypt, Malaysia, Indonesia, the Philippines and Singapore, with sales representation in Poland, Italy, the UK, the USA and other countries.

Heavy Duty DIN 6334 Stainless Steel Long Hex Coupling Nut Rod Connector Threaded Coupler SS304 Coupling Nut

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Heavy Duty DIN 6334 Stainless Steel Long Hex Coupling Nut Rod Connector Threaded Coupler SS304 Coupling Nut

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Product Description

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Available In All Sizes with Multiple Material Options, Standards, and Surface Finishes.

Products Description

Product Name	Hex Coupling Nuts
Diameter	M6-M36 (3/16''- 4''), etc.
Material	Carbon steel, Stainless Steel, Alloy Steel, Brass, Others.
Standard	DIN, GB, ISO, JIS, BA, ANSI, etc.
Surface treatment	Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, Plain, Customized Request.
Certificate	ISO9001-2008, SGS, CTI, RoHS
Thread	Coarse (UNC), Fine (UNF), Metric
Grade	Gr4, 8, 10, 12, A2-40, A2-70, A4-80, 2205, 2507, Incoloy, Nickel, Monel, etc.
Packing	Bulk in cartons (25kg Max.) + wood Pallet or according to customer special demand
Application	Structural Steel; Metal Building; Oil & Gas; Tower & Pole; Wind Energy; Mechanical Machine; Automobile; Home Decorating; etc.

Important Notice: Please let us know the standard, size, quantity, material or grade, and surface finish. Please supply drawings, photos, or samples to us if it is a special or non-standard product.

Frequently Asked Questions

What is a hex coupling nut primarily used for?

A hex coupling nut is an elongated hexagonal fastener internally threaded from both ends. It is designed to join two threaded rods, studs, or external-threaded fasteners together end-to-end to create extended fastening assemblies.

Which surface treatments offer the best corrosion resistance?

Hot Dip Galvanized (HDG) and Dacromet coatings deliver superior outdoor atmospheric and marine corrosion protection. For extreme corrosive environments, we recommend choosing Stainless Steel (A2-70, A4-80, 2205, or 2507).

Can you produce reducing hex coupling nuts for different diameter rods?

Yes, in addition to standard equal-diameter coupling nuts, we can manufacture reducing hex coupling nuts that transition between two different thread sizes or pitches upon custom specification.

How deep should the threaded rods be inserted into the coupling nut?

For optimal load transfer and structural safety, each rod should engage to approximately half of the coupling nut's total length, meeting in the center to balance thread tension equally.

What standards do your hex coupling nuts comply with?

We produce hex coupling nuts in compliance with international standards including DIN (such as DIN 6334), ANSI/ASME, ISO, GB, JIS, and BA, supported by ISO9001-2008, SGS, and RoHS certifications.

Heavy Duty DIN 6334 Stainless Steel Long Hex Coupling Nut Rod Connector Threaded Coupler SS304 Coupling Nut

Product Description

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