Minimum Order : 250
Customization as per requiments
| Size | M2 to M100 |
| Type | Bolt, Nut, Screw, Washer, Rivet, Threaded Rod, Studs, Coated, Nails, Custom Fasteners |
| Standard | Din, Iso, Jis, Gb, Is, Bs, Astm |
| Length | 3-200mm |
| Material | Stainless Steel, Monel, Inconel, Incoloy, Hastelloy, Nickel, Silicon Bronze, Phosphor Bronze |
Delta Fitt Inc. is a top Hex Coupling Nuts Manufacturer offering high-precision, extended-length fastening components made from stainless steel, galvanized steel, alloy steel, brass, and copper. Hex coupling nuts are internally threaded connectors used to join two externally threaded fasteners, such as rods or bolts. Designed in accordance with standards like ASTM A563, DIN 6334, and IS 1364, these nuts enable extended thread length connections and alignment in structural, mechanical, and piping assemblies.
They are widely used in construction, HVAC, plumbing, and heavy-equipment frameworks. Manufactured for B2B applications, our hex coupling nuts come in various sizes, thread grades, and finishes, ideal for both tensioning and positioning operations. Their robust internal threading ensures secure connections under dynamic load and vibration. Delta Fitt Inc. provides reliable logistics, bulk supply capabilities, and customization options in coatings, threads, and dimensions—meeting the high-demand requirements of industrial infrastructure and manufacturing projects.
Made for corrosive environments, these nuts are ideal for plumbing, marine, and food grade installations. They offer long term durability and resistance to chemicals, moisture, and salt spray. Preferred in outdoor tensioning and rod extension systems.
Zinc coated for rust protection, these are commonly used in construction and HVAC applications. Their economic cost and solid corrosion resistance make them ideal for temporary structures and threaded rod installations in exposed environments.
What materials are commonly used to manufacture hex coupling nuts?
Hex coupling nuts are manufactured from stainless steel, galvanized steel, alloy steel, brass, and copper. Stainless steel is corrosion-resistant and ideal for chemical and marine applications. Galvanized steel offers protection against rust and is used in construction and outdoor environments. Alloy steel provides excellent strength for high-load structural connections. Brass and copper variants are used in electrical and decorative applications where conductivity or appearance is prioritized. Material selection depends on load, environment, and required durability.
Which international standards govern hex coupling nut design?
Hex coupling nuts are produced according to ASTM A563 (U.S.), DIN 6334 (Germany), and IS 1364 (India), ensuring quality, thread consistency, and dimensional reliability. These standards specify outer dimensions, thread pitch, mechanical properties, and tolerance levels. Compliance ensures interchangeability, safe installation, and durability across applications like structural assemblies, tensioning systems, and rod extensions. Standard adherence is critical for large-scale industrial projects to ensure quality assurance and component compatibility.
How are hex coupling nuts different from regular hex nuts?
Unlike regular hex nuts, hex coupling nuts are longer in length and are internally threaded throughout. They are designed specifically to connect two threaded rods or fasteners in a straight line. While a regular hex nut is used to secure a single bolt or screw, a coupling nut provides an extended connection — ideal for applications requiring rod lengthening or precise alignment. Their length also allows for greater engagement of threads, offering better load distribution and mechanical strength.
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