In industrial applications, nuts are crucial components for connecting and securing parts. DIN 934 and ISO 4032 are two widely used standards for hex nuts, and they differ in design and performance requirements. Understanding the main differences between these two standards is essential for engineers and procurement professionals when selecting the appropriate nuts. Here are the key differences between DIN 934 and ISO 4032.
What is Din 934?
DIN 934 is a German industrial standard that specifies the dimensions, shapes, and mechanical properties of hex nuts. This standard is applicable to various types of hex nuts and is widely used in mechanical, construction, and other engineering fields.
Key Features of DIN 934:
- Dimensions: DIN 934 defines hex nuts with different diameters and thread pitches, typically ranging from M1.6 to M64.
- Shape: The standard specifies the external shape of hex nuts, including across-flat dimensions and height.
- Mechanical Properties: DIN 934 provides different strength grades for nuts, such as grades 4, 5, 6, 8, 10, and 12, each corresponding to different load capacities.
- Applications: DIN 934 nuts are commonly used as fasteners in conjunction with bolts or screws, suitable for bearing various mechanical loads.
- Testing Standards: To ensure the mechanical properties of nuts are compliant, reference must be made to the DIN 267-4 standard, which details the testing methods and data.
DIN 934 is an important engineering standard that provides a unified specification for design and manufacturing, ensuring the interchangeability and reliability of nuts.
What is ISO 4032?
ISO 4032 is a standard established by the International Organization for Standardization (ISO) that specifies the dimensions, shapes, and mechanical properties of hex nuts, applicable to various industrial applications.
Key Features of ISO 4032:
- Size Range: ISO 4032 covers hex nuts with a diameter range from M1.6 to M64.
- Shape: The standard specifies the external shape of the nuts, including across-flat dimensions and height, which are typically the same for sizes up to M4, and slightly higher than DIN 934 for larger sizes.
- Mechanical Properties: ISO 4032 establishes different strength grades to ensure the reliability of nuts under load conditions.
- Coarse Thread: When using ISO 4032, there is no need to specify the pitch, as all nuts are coarse thread. For fine threads, ISO 8673 should be referenced.
- Applications: ISO 4032 nuts are widely used in mechanical, construction, and other engineering fields, ensuring a good fit with bolts or screws.
ISO 4032 provides a unified standard for the production and use of nuts, ensuring product consistency and interchangeability, thus enhancing safety and reliability in engineering applications.
Comparing DIN 934 to ISO 4032 (ISO 8673)
The main differences between DIN 934 and ISO 4032 are as follows:
| Feature | DIN 934 | ISO 4032 |
| Standard Origin | German standard | International standard |
| Size Range | Applies to diameters below M1.6 and above M64 | Ranges from M1.6 to M64 |
| Nut Height | Same height up to M4, then lower | Same height up to M4, then slightly higher than DIN 934 |
| Across-Flat Dimensions (WAF) | Same for all diameters except M10, 12, 14, and 22 | Same for all diameters except M10, 12, 14, and 22 |
| Pitch Specification | Requires pitch specification | Does not require pitch specification (all are coarse thread) |
| Fine Thread Standard | Not applicable | References ISO 8673 |
| Mechanical Performance Standard | DIN 267-4 | ISO 898-2 |
Summary
The main differences between DIN 934 and ISO 4032 are as follows:
- Source and Application Range: DIN 934 is a German standard, while ISO 4032 is an international standard, with different applicable diameter ranges.
- Height and Across-Flat Dimensions: The height of ISO 4032 nuts is slightly higher than DIN 934 for certain diameters, and both have the same across-flat dimensions for certain diameters.
- Pitch Requirement: DIN 934 requires pitch specification, while ISO 4032 nuts are all coarse thread and do not require specification.
- Fine Thread and Mechanical Performance: DIN 934 does not apply to fine threads, with a mechanical performance standard of DIN 267-4, while ISO 4032 references ISO 898-2 as its mechanical performance standard.
Size Specifications: M1.6-M64
Materials: Carbon Steel 6,8,10 / Stainless Steel A2, A4
SSM offers DIN 934 (ISO 4032) hex nuts suitable for various industrial and engineering applications. These nuts comply with international and German standards, ensuring consistency and reliability in dimensions, shapes, and mechanical performance. Our products cover a range of diameters and strength grades to meet customer needs and are widely used in machinery, construction, and other engineering fields. Feel free to contact us for more information and specific specifications.
