Overview
EN 28736:1992 (aligned with ISO 8736:1986) specifies the characteristics of unhardened taper pins with an internal thread. The standard applies to metric products with nominal diameters from 6 mm to 50 mm, and it tabulates matching metric thread sizes and nominal lengths. It also provides a model for the designation of these components and references relevant international specifications.
This standard is intended for designers, purchasing specialists, and maintenance engineers who require clear, standardized data for selecting and specifying taper pins for mechanical assemblies.
Key Topics
- Scope and applicability: Metric taper pins with internal thread, nominal diameters 6–50 mm.
- Thread and length ranges: Thread sizes M6 up to M50 and nominal lengths from 16 mm up to 200 mm are tabulated.
- Designation: Example format for how products covered by the standard should be designated to ensure unambiguous specification and ordering.
- Standards alignment: Reference to ISO 8736:1986 for harmonization with international practice.
Keywords: EN 28736:1992, ISO 8736:1986, taper pins, internal thread, metric dimensions, nominal diameters, M6–M50, lengths 16–200 mm, designation, interchangeability.
Applications
The standard supports practical use cases across manufacturing and maintenance contexts:
- Component selection for mechanical assemblies where tapered locating or fastening pins are required.
- Procurement and specification documents to ensure suppliers provide products to a recognized metric series and designation.
- Replacement parts and maintenance planning, enabling interchangeability across equipment and suppliers.
- Engineering drawings and parts lists, using the standard designation to reduce ambiguity.
By following EN 28736:1992, teams can reduce errors in ordering, improve compatibility between mating parts, and streamline inventory management for pins used in fixtures, jigs, and assemblies.
Related Standards
- ISO 8736:1986 - International counterpart referenced by EN 28736:1992.
- SIST EN 28736:1996 - Slovenian adoption and national implementation of EN 28736.
- Classification reference: ICS 21.060.50 (Pins, nails) - organizational context for standards classification.
For practical implementation, reference the tabulated thread sizes and nominal lengths in EN 28736:1992 when preparing specifications or procurement documents. Use the provided example designation to ensure consistent naming across drawings and supply chains.