Hexagon nuts, also known as hex nuts, are one of the most widely used types of fasteners, characterized by their six-sided shape that allows for easy tightening and loosening with wrenches or sockets. Their simple yet robust design makes them essential for countless applications, providing reliable and secure connections across various industries, from construction and automotive to electronics and DIY projects.
|
Standard
|
Country/Region
|
Description
|
|
ISO 4032 / ISO 4034
|
International
|
Defines general-purpose hexagon nuts and thin hexagon nuts, respectively
|
|
DIN 934 / DIN 439
|
Germany
|
Specifies requirements for standard hexagon nuts and thin nuts with metric threads
|
|
ASME B18.2.2
|
USA
|
Covers unified inch series hexagon nuts, detailing dimensions and tolerances
|
|
GB/T 6170 - 2015
|
China
|
Details product specifications for metric hexagon nuts used in mechanical assembly
|
|
JIS B 1180
|
Japan
|
Japanese standard for hexagon nuts, including dimensional and strength requirements
|
|
Grade
|
Material
|
Tensile Strength (MPa)
|
Application Scenarios
|
|
4
|
Low-carbon steel (e.g., Q235)
|
400
|
General household applications, light-duty machinery
|
|
5
|
Low-carbon steel (e.g., Q235)
|
500
|
Common industrial assembly, non-critical connections
|
|
8
|
Medium-carbon steel (e.g., 45# steel)
|
800
|
Automotive components, industrial equipment
|
|
10
|
Alloy steel (e.g., 35CrMo)
|
1000
|
High-stress applications like heavy trucks and engines
|
|
12
|
Alloy steel (e.g., 40Cr)
|
1200
|
Extreme-load scenarios, aerospace and high-performance machinery
|
|
A2 - 70 (Stainless Steel)
|
304 stainless steel
|
700
|
Corrosion-resistant environments (marine, food processing)
|
|
A4 - 80 (Stainless Steel)
|
316 stainless steel
|
800
|
High-corrosion and high-temperature settings, such as chemical plants
|
|
Nylon / Plastic
|
Nylon 6/6, Polypropylene
|
-
|
Insulation, lightweight, or non-conductive applications
|
|
Treatment Method
|
Abbreviation
|
Description
|
|
Zinc Plating
|
Zn
|
Basic rust protection; available in clear, blue, yellow, or black finishes
|
|
Hot-Dip Galvanizing
|
HDG
|
Superior corrosion resistance, ideal for outdoor and heavy-industrial use
|
|
Electroplating
|
-
|
Deposits a thin, uniform layer for improved aesthetics and light corrosion protection
|
|
Black Oxide Coating
|
Black
|
Creates a non-reflective, black surface with moderate rust resistance
|
|
Dacromet Coating
|
Dacromet
|
Environmentally friendly, chromium-free coating with high corrosion and anti-galling properties
|
|
Nickel Plating
|
Ni
|
Enhances appearance and provides moderate corrosion resistance
|
|
Anodizing (Aluminum Nuts)
|
-
|
Increases surface hardness and corrosion resistance of aluminum nuts, available in various colors
|