Domine las normas de sujetadores DIN e ISO incluyendo DIN 931, DIN 933, ISO 4014, ISO 4017 y más.
Why Fastener Standards Matter for Procurement
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DIN Hex Bolts: The Industry Foundation
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| Standard | Thread Type | Head Type | Typical Use |
|---|---|---|---|
| DIN 931 | Partial thread | Hex | Structural connections |
| DIN 933 | Full thread | Hex | General assembly |
| DIN 934 | Nut companion | Hex | With DIN 931/933 |
| DIN 125 | Washer companion | Flat | Under hex head |
ISO Hex Bolt Standards: Global Equivalents
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| DIN Standard | ISO Equivalent | Key Difference |
|---|---|---|
| DIN 931 | ISO 4014 | Dimensionally identical, different origin |
| DIN 933 | ISO 4017 | Dimensionally identical, different origin |
| DIN 934 | ISO 4032 | Dimensionally identical, different origin |
| DIN 125 | ISO 7089 | Dimensionally identical, different origin |
Mechanical Property Classes Explained
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| Property Class | Tensile Strength (MPa) | Yield Strength (MPa) | Common Application |
|---|---|---|---|
| 4.8 | 400 | 320 | Light general use |
| 8.8 | 800 | 640 | General construction |
| 10.9 | 1000 | 900 | Structural steel |
| 12.9 | 1200 | 1080 | High-stress machinery |
Other Critical DIN Fastener Standards
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| Standard | Product Type | Key Feature |
|---|---|---|
| DIN 6921 | Hex flange bolt | Integrated serrated washer |
| DIN 6798 | Tab washer | Locking action |
| DIN 975 | Threaded rod | Full-length threading |
| DIN 562 | Square nut | Low-cost residential use |
| DIN 931 | Hex bolt (partial) | Most common structural fastener |
Procurement Considerations for African Markets
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Frequently Asked Questions
See frequently asked questions below.
Are DIN and ISO fasteners interchangeable?
Yes, in most cases. DIN and ISO hex bolt standards are dimensionally identical. A DIN 931 bolt will fit an ISO 4014 application. However, always verify the property class and coating match the engineering specification.
What property class should I use for structural steel in Africa?
Property class 10.9 (ISO) or 8.8 (DIN) is standard for structural steel connections in most African building codes. For coastal or high-humidity environments, specify hot-dip galvanized 10.9 bolts. Always consult local SABS or equivalent standards.
Can I use DIN bolts with ISO nuts?
Yes, DIN 934 nuts and ISO 4032 nuts are dimensionally identical and fully interchangeable. The same applies to washers (DIN 125 / ISO 7089). Mixing DIN and ISO components from the same property class is standard industry practice.
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