Hex nut manufacturer – Zeyao Hardware Factory, 20 years of production experience
Zeyao Hardware is a professional hex nut manufacturer with over 20 years of production experience in the fastener industry. For the past two decades, we have focused on the manufacturing and customization of non-standard fasteners, providing reliable fastening solutions for customers in machinery, construction, automotive, electrical equipment, industrial hardware, and other industries.
Our factory is equipped with more than 160 advanced production machines, covering cold heading, threading, tapping, stamping, CNC machining, polishing, and surface treatment processes.


What is a stainless steel hex nut?
A hexagonal nut is a standard fastener featuring internal threads and a hexagonal external shape. It is primarily used in conjunction with bolts and studs to establish secure connections between mechanical structures.
Stainless steel nuts are widely used in construction engineering, machinery and equipment, automobile manufacturing, shipbuilding, chemical equipment, and power systems, among other fields.
Product Parameters
|
Item |
Specification Details |
|
Product Name |
Stainless Steel Hex Nut |
|
Product Type |
Hex Nut |
|
Material |
SUS201 / SUS304 (A2) / SUS316 (A4) / 316L |
|
Standard |
DIN934 / ISO4032 / ANSI B18.2.2 / ASTM A194 |
|
Thread Type |
Metric Coarse Thread / Fine Thread / UNC / UNF |
|
Size Range |
M2–M72 |
|
Thread Tolerance |
6H |
|
Strength Grade |
A2-50 / A2-70 / A4-70 / A4-80 |
|
Surface Finish |
Plain / Polished / Passivated / Electropolished |
|
MOQ |
1,000 pcs for standard sizes |
|
Custom Service |
OEM / ODM Supported |
|
Packaging |
Small Box + Outer Carton / Woven Bag / Pallet Packaging |
|
Manufacturing Process |
Cold Heading + Thread Tapping |
|
Lead Time |
15–30 Days |
|
Applications |
Machinery, Construction, Automotive, Marine, etc. |
|
Manufacturer |
Zeyao Hardware Factory |
Common Specifications
|
Thread Size |
Width Across Flats (AF) |
Thickness (m) |
|
M3 |
5.5 mm |
2.4 mm |
|
M4 |
7 mm |
3.2 mm |
|
M5 |
8 mm |
4 mm |
|
M6 |
10 mm |
5 mm |
|
M8 |
13 mm |
6.5 mm |
|
M10 |
17 mm |
8 mm |
|
M12 |
19 mm |
10 mm |
|
M16 |
24 mm |
13 mm |
|
M20 |
30 mm |
16 mm |
|
M24 |
36 mm |
19 mm |
|
M30 |
46 mm |
24 mm |


Application Areas
Stainless steel nuts are widely used in various equipment and engineering projects due to their rust resistance, stable strength, and long service life.
Construction Engineering
Steel Structures
Guardrails
Curtain Walls
Roof Supports
Outdoor Projects
Ordinary nuts are prone to rusting after long-term exposure to wind, sun, and rain, while stainless steel nuts can remain corrosion-free for a longer period, reducing the need for later maintenance and replacement.
Machinery and Equipment
Automation Equipment
Industrial Machinery
Conveying Equipment
Packaging Machinery
Electrical Equipment
Nuts maintain a stable lock and are not easily loosened.
Automobiles and Motorcycles
Exhaust Systems
Chassis Components
Engine Accessories
Motorcycle Modification Parts
Stainless steel nuts are resistant to high temperatures and moisture, and are not prone to rusting even after long-term use.
Shipbuilding and Coastal Engineering
Ships
Dock Equipment
Offshore Platforms
Coastal Buildings
316 stainless steel has stronger salt spray resistance, making it more suitable for marine environments.
Medical Equipment
Medical Devices
Pharmaceutical Equipment
Laboratory Equipment
Stainless steel is easier to clean and more resistant to disinfection.
Photovoltaic and New Energy Equipment
Solar support systems and outdoor power equipment are exposed to the elements for extended periods. Stainless steel hexagonal nuts prevent long-term rusting and are therefore widely used in:
Photovoltaic Support Systems
Wind Power Generation Equipment
Power Systems
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