GOST 32484.3-2013 PDF

Full title and description

GOST 32484.3-2013 — "High-strength structural bolting assemblies for preloading. System HR — Hexagon bolt and nut assemblies". This part of the GOST 32484 series specifies requirements for hexagon-head bolt and nut assemblies intended for preloaded structural joints (system HR).

Abstract

This standard (part 3 of the GOST 32484 series) defines dimensions, mechanical properties, marking and functional requirements for HR-type high-strength bolt + nut assemblies intended for preloading in structural applications. It covers metric thread sizes from M12 to M36, typical property classes used for preloaded connections, and requirements needed to achieve the specified preload and ductility behavior (ductility achieved primarily by bolt elongation). The document is aligned in scope and application with the corresponding European EN 14399 series for preloaded structural bolting.

General information

• Status: Active / In force.
• Publication date: Designation year 2013; introduced/implemented 1 July 2015.
• Publisher: Issued as a GOST (interstate standard) under the GOST system (EASC / adopted for use in Russia — implemented via national standard bodies such as Rosstandart).
• ICS / categories: Mechanical systems and components for general use — fasteners; typical classification around 21.060.30 (mechanical systems for general use / fasteners).
• Edition / version: Edition referenced as GOST 32484.3-2013 (part of the 2013 series); national introduction date shown as 01.07.2015.
• Number of pages: 33 pages.

Scope

GOST 32484.3-2013 specifies requirements for HR-system high-strength hexagon bolt and nut assemblies designed for preloaded structural connections. It covers metric thread sizes M12–M36, relevant geometric dimensions (head, thread length, grip/clamp lengths), marking, mechanical property classes used for preloading, and the functional characteristics necessary to achieve intended preload levels and ductility (ductility by bolt plastic elongation). The standard is intended for use in structural metallic works and is used alongside the other parts of the GOST 32484 series that set general requirements and test/verification rules.

Key topics and requirements

• Definitions and system classification for HR bolting assemblies (HR vs HV systems — HR intended to obtain ductility by bolt elongation).
• Dimensional requirements for hexagon bolts (head sizes, thread lengths, grip/clamp lengths) and corresponding nut dimensions (normal nut height/style 1).
• Mechanical property classes and performance for preloading (typical classes and combinations used to achieve the required preload and ductility behavior).
• Marking and identification rules to prevent mixing HR and HV components and to ensure traceability.
• Requirements for washers associated with HR assemblies (reference to the related parts for washer specifications).
• Functional requirements to permit achievement of the design preload (references to methods of preloading and use of appropriate lubrication/assembly practice given in related parts of the series).

Typical use and users

Used by structural and mechanical engineers, fabricators, fastener manufacturers, quality and conformity assessment bodies, and construction contractors for design and assembly of preloaded bolted connections in steel structures (buildings, bridges, heavy machinery). Also used by procurement and inspection teams for specifying and verifying HR-type bolting assemblies.

Related standards

GOST 32484.3-2013 is part of the GOST 32484 series and is used together with GOST 32484.1 (general requirements), GOST 32484.2 (preload verification / assembly procedure), GOST 32484.4 (system HV — alternative assemblies), and the GOST parts covering washers (32484.5 / 32484.6). It is also aligned in scope with the European EN 14399 series (notably EN 14399‑3 for HR assemblies and EN 14399‑1/2 for general requirements and suitability for preloading).

Keywords

high-strength bolting, preloading, HR system, hexagon bolt, nut assembly, structural fasteners, GOST 32484 series, M12–M36, preload, washer, marking, mechanical properties.

FAQ

Q: What is this standard?

A: GOST 32484.3-2013 is the part of the GOST 32484 series that specifies requirements for high-strength hexagon bolt + nut assemblies (system HR) intended for preloaded structural connections.

Q: What does it cover?

A: It covers dimensions, mechanical requirements, marking, and functional characteristics for HR hexagon bolt and nut assemblies (metric sizes M12–M36) used to achieve required preloads and ductility behavior in structural bolted joints.

Q: Who typically uses it?

A: Structural and mechanical engineers, fastener manufacturers, fabricators, contractors, and conformity assessment/inspection bodies involved with preloaded bolted connections in construction, bridges and machinery.

Q: Is it current or superseded?

A: As recorded in standard catalogues and distributors, GOST 32484.3-2013 is published as designation year 2013 and shown introduced for use from 1 July 2015; it is listed as active in current documentation. Users should verify the status with their national standards body for the latest amendments or national adoptions before application.

Q: Is it part of a series?

A: Yes — it is one part of the multi-part GOST 32484 series (parts covering general requirements, preload verification/procedures, HR and HV system components, and associated washers). The series corresponds in purpose to the EN 14399 family.

Q: What are the key keywords?

A: High-strength bolting, preloading, HR system, hexagon bolt, nut, washer, M12–M36, mechanical properties, marking, structural fasteners.