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sourcing map Hex Coupling Nuts Review: Practical connectors for lighting and DIY

sourcing map M16 x 1.5mm Pitch Hex Coupling Nuts, 2Pcs 24mm/ 0.9" Length Grade 10.9 Carbon Steel Fully Threaded Rod Coupling Nut Stud Fine Thread Pipe Connector Fasteners, Black
4.7
[High-Strength Carbon Steel]  Grade 10.9 carbon steel provides superior strength for durable connections.
[Corrosion-Resistant Finish]  Black oxidation coating prevents rust and extends service life.
[Precise Fine Threads]  Deep, clear fine threads ensure secure fastening and even force distribution.
[Hexagonal Grip Design]  Hex shape fits standard wrenches for easy installation and removal.
[Wide Application Range]  Suitable for lamps, machinery, construction, automotive, and DIY projects.
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Fasteners designed to join threaded rods and extend bolts, offering secure mechanical connections for a range of projects. Confident assembly and fewer returns make life easier for hobbyists, electricians and installers. Is sourcing map Hex Coupling Nuts the right choice for your next lighting or DIY job?

⚡ At a Glance
  • Fastening Reliability: Fine, deep threads and Grade 10.9 carbon steel deliver secure joins under load
  • Best for: Home decorators, electricians and workshop users extending screws or joining threaded rods
  • Not ideal for: Applications that require coarse threads or non-standard thread pitches

Fully threaded hex coupling nuts connect two threaded parts securely. Hex profile allows wrench use for straightforward installation.


Secure, vibration-resistant joins - with fine M16 x 1.5 threads

Fine thread profile, described as deep and clear, increases contact area between mating parts and distributes load evenly across the thread. Even force distribution reduces the chance of loosening under vibration or repetitive stress.

Reliable threaded connections reduce loosening in lighting fittings and mechanical assemblies, keeping joins safe over time.

Durable performance - thanks to Grade 10.9 carbon steel and black oxidation

Grade 10.9 identifies a high-tensile carbon steel suitable for demanding fastening tasks, while black oxidation provides a protective conversion layer. The surface treatment improves corrosion resistance and helps prevent rust formation.

Long service life suits use in lamps, machinery and workshop applications where strength and resistance to wear matter.

Easy to fit and remove - with a hexagonal profile and standard 24mm width

Hexagonal shape provides six flat contact faces compatible with common wrenches and sockets, and the specified 24mm hex width matches standard tool sizes. Fully threaded construction allows precise adjustment of thread engagement.

Straightforward wrench installation speeds assembly and maintenance, useful for installers working in tight or awkward positions.

✨ The 4 Key Reasons for sourcing map Hex Coupling Nuts
  1. Grade 10.9 Carbon Steel - Exceptional tensile strength for heavy-duty fastening
  2. Black Oxidation Finish - Resists rust for longer service life in damp areas
  3. Fine M16 x 1.5 Threads - Tight, secure joins ideal for precise assemblies
  4. 24mm Hex Width - Fits common wrenches for quick installation and removal
📋 Technical Details at a Glance
  • Category: Coupling Nuts
  • Material: Carbon Steel
  • Grade: 10.9
  • Surface Treatment: Black Oxidation
  • Thread Type: Fine Thread
❓ Frequently Asked Questions

Q: What thread size do these coupling nuts use?

A: Female thread size is M16 x 1.5, a fine thread pitch suitable for precise joins.

Q: Are these suitable for lighting installations such as chandeliers and floor lamps?

A: Yes, they are widely used in crystal lamps, chandeliers, floor lamps and table lamps according to the product description.

Q: Will they resist rust in typical indoor environments?

A: Carbon steel construction with a black oxidation surface treatment improves corrosion resistance and helps prevent rust.

🏆 Our Verdict

Suitable for electricians, home decorators and workshop users who need reliable connectors for threaded rods and extensions. High-tensile Grade 10.9 steel combined with fine M16 x 1.5 threads and a protective black oxidation finish makes the coupling nuts a dependable choice. Practical long-term value comes from durable construction and simple compatibility with standard tools.