EN 28738:1992
(Main)Plain washers for clevis pins - Product grade A (ISO 8738:1986)
Plain washers for clevis pins - Product grade A (ISO 8738:1986)
Specifies the characteristics of products according to ISO 2340 and ISO 2341; includes nominal sizes from 3 mm up to and including 100 mm as well as specifications with reference to International Standards; gives an example for the designation.
Scheiben für Bolzen - Produktklasse A (ISO 8738:1986)
Rondelles plates pour axes d'articulation - Grade A (ISO 8738:1986)
La présente Norme internationale spécifie les caractéristiques des rondelles plates de grade A pour axes d'articulation conformes à l'ISO 2340 et à l'ISO 2341. Les rondelles plates conformes à la présente Norme internationale doivent être utilisées du côté des trous de goupilles.
Podložke za sornike - Razred izdelave A
General Information
- Status
- Published
- Publication Date
- 23-Jul-1992
- Technical Committee
- CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 04-Feb-2008
- Completion Date
- 04-Feb-2008
Relations
- Effective Date
- 28-Jan-2026
Overview - EN 28738:1992 (Plain washers for clevis pins, Product grade A)
EN 28738:1992 adopts ISO 8738:1986 and specifies requirements for plain washers for clevis pins - product grade A. The standard defines the characteristics of washers manufactured in accordance with the related ISO documents (notably ISO 2340 and ISO 2341), covers nominal sizes from 3 mm up to and including 100 mm, and includes references to international standards. It also provides an example for product designation to support clear identification in procurement and documentation.
Key topics and technical requirements
- Scope and applicability: Washers designed specifically for use with clevis pins; intended to standardize form and designation for Product Grade A items.
- Reference standards: Requirements are specified with direct reference to ISO 2340 and ISO 2341, and the adoption is consistent with ISO 8738:1986.
- Nominal sizes covered: All sizes from 3 mm to 100 mm are included within the standard’s scope.
- Product designation: The standard supplies an example for how washers should be designated to ensure unambiguous ordering and record-keeping.
- Conformity and documentation: Guidance on how products conforming to the standard should be described and identified in technical documentation and procurement.
- Classification: Establishes the product grade A level and its relationship to the relevant ISO definitions.
(Note: EN 28738:1992 references ISO documents for detailed dimensional and material characteristics. For exact dimensions, tolerances, and material specifications consult ISO 2340, ISO 2341 and ISO 8738:1986.)
Applications - who uses this standard
- Manufacturers of washers and fastener components to ensure consistent product grade and interchangeability.
- Design engineers specifying clevis-pin assemblies in machinery, agricultural equipment, automotive linkages, lifting and rigging systems, and general mechanical applications.
- Purchasing and procurement teams using standardized designation to avoid ambiguity in orders.
- Quality assurance and test laboratories that verify compliance with international references and product grade requirements.
- Standards bodies and technical committees aligning national specifications with European and ISO norms.
Related standards
- ISO 8738:1986 (adopted by EN 28738:1992)
- ISO 2340 (referenced for product characteristics)
- ISO 2341 (referenced for product characteristics)
- ICS classification: 21.060.30 (Washers, locking elements)
This standard simplifies specification and procurement of plain washers for clevis pins, ensuring compatibility, traceability, and consistent quality across applications where clevis-pin connections are used.
Frequently Asked Questions
EN 28738:1992 is a standard published by the European Committee for Standardization (CEN). Its full title is "Plain washers for clevis pins - Product grade A (ISO 8738:1986)". This standard covers: Specifies the characteristics of products according to ISO 2340 and ISO 2341; includes nominal sizes from 3 mm up to and including 100 mm as well as specifications with reference to International Standards; gives an example for the designation.
Specifies the characteristics of products according to ISO 2340 and ISO 2341; includes nominal sizes from 3 mm up to and including 100 mm as well as specifications with reference to International Standards; gives an example for the designation.
EN 28738:1992 is classified under the following ICS (International Classification for Standards) categories: 21.060.30 - Washers, locking elements. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 28738:1992 has the following relationships with other standards: It is inter standard links to EN ISO 15494:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 28738:1992 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Podložke za sornike - Razred izdelave AScheiben für Bolzen - Produktklasse A (ISO 8738:1986)Rondelles plates pour axes d'articulation - Grade A (ISO 8738:1986)Plain washers for clevis pins - Product grade A (ISO 8738:1986)21.0
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