ISO 8750 is the standard cited for coiled spring pins (iso 8750). This page sets out what the standard controls for this part, reproduces the dimensional table supplied against it, and notes the related designations referenced on drawings.
ISO 8750 — Scope
The table below lists the dimensions catalogued for coiled spring pins (iso 8750) under ISO 8750. The scope of ISO 8750 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to ISO 8750. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by ISO 8750
| Nominal diameter d (mm) | Hole diameter (mm) | Length L (mm) | Duty | Double shear (kN) | Coils | Material | Reference standard |
|---|---|---|---|---|---|---|---|
| 2 | 2.0 | 10 | Standard | 1.5 | 2¼ | Spring steel / A2 | ISO 8750 |
| 3 | 3.0 | 16 | Standard | 3.4 | 2¼ | Spring steel / A2 | ISO 8750 |
| 4 | 4.0 | 20 | Standard | 6.1 | 2¼ | Spring steel / A2 | ISO 8750 |
| 5 | 5.0 | 26 | Standard | 9.5 | 2¼ | Spring steel / A2 | ISO 8750 |
| 6 | 6.0 | 32 | Standard | 13.7 | 2¼ | Spring steel / A2 | ISO 8750 |
| 8 | 8.0 | 40 | Standard | 24.3 | 2¼ | Spring steel | ISO 8750 |
| 10 | 10.0 | 50 | Standard | 38.0 | 2¼ | Spring steel | ISO 8750 |
Companion Standards
A complete specification for coiled spring pins (iso 8750) normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. ISO 8750 is one of them, not all of them.
When to Specify ISO 8750
Choose ISO 8750 for international engineering work and OEM supply where ISO standards are the contractual reference. It is the default modern specification for coiled spring pins (iso 8750).
Custom manufacturing · Made to drawing
Need a pin to this standard in a non-standard size?
Parts built to ISO 8750 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down. Made by cold heading or turning.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
