ISO 7092-2000 PDF

Full title and description

St ISO 7092-2000 — Plain washers — Small series — Product grade A. Specifies dimensional and product requirements for small-series plain (flat) washers in product grade A, intended for use with metric bolts, screws and nuts where the smaller series of washer sizes (nominal thread diameters from 1.6 mm to 36 mm) and higher-precision tolerances are required.

Abstract

ISO 7092:2000 defines the characteristics, dimensional limits and basic requirements for plain washers belonging to the small series and classified as product grade A. The standard covers dimensional data (inner/outer diameters, thickness), tolerance bands and hardness classes commonly used (notably 200 HV and 300 HV), enabling interchangeability and correct selection of washers for bolted assemblies where compact washer sizes and tighter tolerances are needed.

General information

• Status: Published (current edition confirmed by ISO).
• Publication date: June 2000 (Edition 2, published 2000‑06).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 21.060.30 (Washers, locking elements).
• Edition / version: Edition 2 (2000).
• Number of pages: 5.

Scope

This International Standard specifies the characteristics of plain washers — small series — product grade A. It covers nominal thread diameters from 1.6 mm up to and including 36 mm, gives the relevant dimensional series (inner diameter, outer diameter, thickness) and tolerance ranges for product grade A, and identifies applicable hardness classes (commonly 200 HV and 300 HV). The standard is intended to ensure dimensional interchangeability and to support selection of washers for mechanical assemblies and fastener products in the specified size range.

Key topics and requirements

• Definition of small-series plain washers and designation rules for product grade A.
• Dimensional tables for nominal thread diameters (d), inner diameter (d1), outer diameter (d2) and nominal thickness (s) for sizes from 1.6 mm to 36 mm.
• Tolerance bands and geometrical requirements appropriate to product grade A (tighter dimensional tolerances than product grade C).
• Hardness classes commonly associated with these washers (200 HV and 300 HV) and their intended application context in assemblies.
• Basic marking/identification and selection guidance to ensure compatibility with bolts, screws and nuts of appropriate property classes.
• Interfacing requirements with related tolerance and coating standards when applicable (e.g., tolerancing norms and surface-finish/coat standards).

Typical use and users

Manufacturers of fasteners and washers, mechanical design engineers, procurement/specification teams, quality and inspection departments, and distributors/suppliers of fastener components use ISO 7092:2000 to specify and verify small-series plain washers where compact dimensions and precise tolerances are required—for electronics assemblies, small machinery, precision instruments and other applications requiring smaller metric fasteners.

Related standards

ISO 7092:2000 is part of the family of plain-washer standards. Closely related documents include ISO 7089, ISO 7090, ISO 7091, ISO 7093‑1, ISO 7093‑2 and ISO 7094 (plain washers for other series and product grades). Other relevant standards include ISO 10644 (screw and washer assemblies — washer hardness classes 200 HV and 300 HV) and ISO 4759‑3 (tolerances for plain washers — product grades A, C and F). When specifying coatings or surface treatments, consult standards such as ISO 4042 and any applicable regional EN/CEN adaptations.

Keywords

plain washer; flat washer; small series; product grade A; ISO 7092; metric washers; washer dimensions; washer tolerances; hardness 200 HV; hardness 300 HV; fasteners; ISO/TC 2; ICS 21.060.30.

FAQ

Q: What is this standard?

A: ISO 7092:2000 is an International Standard that specifies dimensional and product requirements for plain (flat) washers of the small series, product grade A.

Q: What does it cover?

A: It covers nominal sizes from 1.6 mm to 36 mm, the dimensional series (inner/outer diameters and thickness), tolerance bands for product grade A and commonly used hardness classes (notably 200 HV and 300 HV), providing the information needed for selection and interchangeability of small-series washers.

Q: Who typically uses it?

A: Fastener and washer manufacturers, mechanical and design engineers, procurement/specification teams, quality inspectors and distributors rely on this standard to specify, produce and verify small flat washers for precision or compact bolted assemblies.

Q: Is it current or superseded?

A: The current edition is ISO 7092:2000 (Edition 2), published June 2000. ISO confirmed this edition on 22 June 2021; the edition remains the valid published text. ISO listings note a review/revision status; as of 2 March 2026 the 2000 edition is still the published edition but may be subject to future revision by the technical committee.

Q: Is it part of a series?

A: Yes. ISO 7092 is part of the plain-washer series of standards (for example ISO 7089, ISO 7090, ISO 7091, ISO 7093 and ISO 7094) that together define dimensions and requirements for various washer series and product grades.

Q: What are the key keywords?

A: Plain washer, flat washer, small series, product grade A, washer dimensions, washer tolerances, 200 HV, 300 HV, fasteners, ISO 7092.