GOST 30893.1-2002 PDF

Full title and description

GOST 30893.1-2002 — Основные нормы взаимозаменяемости. Общие допуски. Предельные отклонения линейных и угловых размеров с неуказанными допусками. Standard establishing general (unspecified) tolerances and limit deviations for linear and angular dimensions applicable primarily to machined and sheet-formed metal parts, with provisions for wider application to other materials and manufacturing methods.

Abstract

This interstate (GOST) standard defines classes of general tolerances for linear and angular dimensions where tolerances are not specified individually on drawings, gives rules for designation and application of those tolerances, and contains normative tables and application notes (including additional variants and explanatory annexes). It is aligned with ISO 2768‑1:1989 (with national modifications).

General information

• Status: Active / current (Interstate standard in force).
• Publication date: 2002 (standard designation year); approved by Gosstandart in 2003 (June 23) and enacted in subsequent national registries.
• Publisher: Межгосударственный совет по стандартизации, метрологии и сертификации (Interstate Council) / Gosstandart (Russian State Standard authorities); developed by OAO "НИИизмерения".
• ICS / categories: 17.040.10 — Metrology and measurement; linear and angular measurements; limits and fits.
• Edition / version: ГОСТ 30893.1-2002 (first edition, 2002).
• Number of pages: 19 (typical published copy).

Scope

The standard applies to metallic parts produced by cutting or by sheet-metal forming and establishes general tolerances for linear and angular dimensions when those tolerances are not indicated on nominal dimensions. It may also be applied to non‑metallic parts and to other manufacturing methods where appropriate and not otherwise covered by other standards. The document includes tables of limit deviations, rules for designation on drawings, and annexes with additional variants and explanatory guidance.

Key topics and requirements

• Definition and application of general (unspecified) tolerances for linear and angular dimensions.
• Classification of tolerance grades/classes (conventional classes such as fine/medium/coarse/very coarse and corresponding symbols for drawing designation).
• Tables of limit deviations for representative dimensional ranges and angular tolerances (normative tables in the standard).
• Rules for indicating general tolerances on technical drawings (example: "Общие допуски по ГОСТ 30893.1 — m").
• Additional variants and application notes in annexes (practical options used in industry; guidance when functional requirements demand different tolerances).
• Normative references and relationship to ISO 2768 (ISO 2768‑1:1989) and to the companion document GOST 30893.2-2002 (general tolerances for form and positional characteristics).

Typical use and users

Used by mechanical designers, drafting engineers, manufacturing engineers, quality and metrology laboratories, technical document authors, and procurement/specification specialists in industries performing machining and sheet-metal fabrication. It is applied during the design stage (to set unspecified tolerances on drawings), in production control, and in inspection/acceptance processes.

Related standards

Key related documents include GOST 30893.2-2002 (general tolerances for form and positional characteristics), ISO 2768‑1:1989 (basis for the standard), ISO 2768‑2:1989 (related guidance), and earlier national standard GOST 25670‑83 which it replaced; the standard also references drawing and metrology standards such as GOST 2.307‑68 and related normative documents.

Keywords

general tolerances, unspecified tolerances, limit deviations, linear dimensions, angular dimensions, interchangeability, ISO 2768, machining tolerances, drawing standards, GOST 30893

FAQ

Q: What is this standard?

A: ГОСТ 30893.1‑2002 is an interstate standard that specifies general (unspecified) tolerances — limit deviations for linear and angular dimensions — to be applied when individual tolerances are not indicated on drawings.

Q: What does it cover?

A: It covers rules, classes and normative tables for limit deviations for linear and angular dimensions, rules for designation on technical drawings, and application guidance (including annexes with additional variants). It is primarily intended for machined and sheet‑formed metal parts but can be applied more broadly when appropriate.

Q: Who typically uses it?

A: Mechanical designers, detailers/drafters, manufacturing engineers, QA and metrology labs, and standards/technical documentation specialists in machine‑building and metal fabrication industries.

Q: Is it current or superseded?

A: As of the available authoritative registries and standards databases the standard is in force / acting (it replaced GOST 25670‑83). National enactment dates and registry entries vary by country; users should check their national standards body for the current national status and amendments.

Q: Is it part of a series?

A: Yes — it is the first part of the GOST 30893 series addressing general tolerances; GOST 30893.2‑2002 covers general tolerances for form and positional characteristics (unspecified). The series corresponds to ISO 2768 parts where applicable.

Q: What are the key keywords?

A: General tolerances; unspecified tolerances; linear/ angular limit deviations; interchangeability; tolerances classes; ISO 2768.