GOST R 52646-2006 PDF

Full title and description

GOST R 52646-2006 — "Шайбы к высокопрочным болтам для металлических конструкций. Технические условия" (English: "Washers for high‑strength bolts for metal structures. Specifications"). The standard defines technical requirements, dimensions, mechanical properties, heat treatment and marking for flat hardened and tempered washers used with high‑strength bolts and nuts in metal constructions.

Abstract

This national standard (GOST R) adapts ISO 7415:1984 for use in the Russian Federation and specifies the design, materials, manufacturing and quality requirements for plain (flat) hardened and tempered washers intended for structural bolting in metal constructions (including bridge and general building structures). It is intended to ensure interchangeability and reliable performance of washer components used with high‑strength bolts and nuts in a wide range of climatic conditions.

General information

• Status: Cancelled / withdrawn (standard is no longer in force as published).
• Publication date: Approved 27 December 2006; introduced into effect 1 January 2008; end of validity listed as 1 July 2018.
• Publisher: Federal Agency on Technical Regulating and Metrology (Rosstandart).
• ICS / categories: OCS/ICS 21.060.30 (fastening elements — washers).
• Edition / version: GOST R 52646-2006 (year 2006; national adoption of ISO 7415:1984).
• Number of pages: 13 pages (typical published text length).

Scope

The standard covers plain (flat) hardened and tempered washers produced for assembly with high‑strength bolts and nuts used in metal structures and machinery. It applies to washers intended for use across all macro‑climatic regions (per GOST 15150) and states testing, marking and acceptance requirements necessary to guarantee performance under structural loads and dynamic conditions.

Key topics and requirements

• Definition of washer types, shapes and dimensional series consistent with structural bolting practices.
• Material and mechanical property requirements (hardened and tempered steels; specified strength/hardness ranges).
• Heat treatment and hardness control to ensure durability in high‑strength bolted connections.
• Surface treatments and corrosion protection options (zinc coatings, passivation, cadmium, etc.).
• Dimensional ranges and typical nominal diameters (examples in industry practice include M16–M48 sizes and corresponding outer diameters/thicknesses).
• Marking, certification and inspection/testing rules for acceptance of batches.
• Normative references and alignment with ISO 7415:1984 and related GOST R standards for bolts and nuts.

Typical use and users

Primary users are manufacturers of fasteners, suppliers, structural engineers, bridge builders and construction contractors specifying high‑strength bolted connections. The washers are used in assembly of steel structures, bridges, heavy machinery and other applications where high load distribution and resistance to loosening are required.

Related standards

Key related standards include ISO 7415:1984 (plain washers for high‑strength structural bolting), the companion GOST R series for high‑strength bolts and nuts (GOST R 52643-2006, GOST R 52644-2006, GOST R 52645-2006), and later Russian documents such as GOST 32484.5-2013 referenced in normative lists. Users should consult current national standards or contract documents to determine which document is mandatory for a given procurement.

Keywords

washers; high‑strength washers; structural washers; GOST R 52646-2006; ISO 7415; hardened and tempered washers; metal structures; specification; fasteners; bolted connections.

FAQ

Q: What is this standard?

A: GOST R 52646-2006 is a Russian national standard that specifies technical requirements for plain hardened and tempered washers used with high‑strength bolts in metal structural applications (national adoption of ISO 7415:1984).

Q: What does it cover?

A: It covers washer geometry, materials, heat treatment, mechanical properties, surface protection, marking, testing and acceptance rules for washers intended for high‑strength structural bolting.

Q: Who typically uses it?

A: Fastener manufacturers, suppliers, structural and bridge engineers, contractors and quality inspectors involved in heavy steel construction and machinery assembly.

Q: Is it current or superseded?

A: The standard was approved in December 2006 and introduced 1 January 2008, but public records list it as cancelled/withdrawn with an end of validity around 1 July 2018; in practice, users should check current contract requirements because later standards (for example GOST 32484.5‑2013 and other updated normative documents) may apply.

Q: Is it part of a series?

A: Yes — it is part of a set of GOST R documents addressing high‑strength structural bolting (bolts, nuts and washers) and references several related standards; it also aligns with ISO 7415:1984.

Q: What are the key keywords?

A: Washers, high‑strength, structural bolting, hardened and tempered, GOST R, ISO 7415, metal structures, fasteners.