ISO 2340 (ISO) and NF E 25-753 (NF) are equivalent fastener standards that specify the same or very similar products. Both standards cover 9 fastener types in our database.
ISO 2340 (ISO standard) and NF E 25-753 (NF standard) are equivalent standards that define the same fastener geometry and mechanical requirements. Minor differences may exist in tolerances, marking requirements, or referenced test methods, but the products are interchangeable in most applications. Always verify specific project requirements with your engineer.
| Property | ISO 2340 | NF E 25-753 |
|---|---|---|
| Standard Body | ISO | NF |
| Product Types | 9 fastener types | |
| Interchangeable? | Yes — equivalent standard | |
From: Clevis Pins Without Head — applies to both ISO 2340 and NF E 25-753
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| Φ10 | 22 | 8 | 4 | 21.87 | 5 | 5.18 |
| Φ12 | 24 | 9 | 4 | 23.87 | 6.3 | 6.52 |
| Φ3 | 4 | 2.2 | 1 | 3.925 | 1 | 1.14 |
| Φ4 | 6 |
Both ISO 2340 and NF E 25-753 fasteners are available with various surface treatments. Common options for these standards include:
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
| Clevis Pins Without Head - Form B | ✓ |
| Clevis Pins Without Head(Pins with Split Pin Hole) | ✓ |
| 3.2 |
| 2 |
| 5.925 |
| 1.6 |
| 1.74 |
| Φ5 | 10 | 4.5 | 2 | 9.91 | 3.2 | 3.38 |
| Φ6 | 14 | 6 | 3 | 13.89 | 4 | 4.18 |
| Φ8 | 18 | 7 | 3 | 17.89 | 5 | 5.18 |
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