ISO 10512-2012 PDF

Full title and description

ISO 10512:2012 — Prevailing torque type hexagon regular nuts (with non-metallic insert) with metric fine pitch thread — Property classes 6, 8 and 10. This edition specifies the characteristics, dimensional and material requirements, and product grades for regular hexagon nuts with non‑metallic insert and fine pitch metric threads, covering nominal thread diameters from 8 mm up to and including 36 mm.

Abstract

ISO 10512:2012 defines requirements for prevailing‑torque hexagon regular nuts (non‑metallic insert) with fine pitch metric threads. It sets out the applicable nominal diameters, product grades (grade A for sizes ≤16 mm and grade B for sizes >16 mm), and property classes (6, 8 and 10), together with key characteristics used for manufacture, marking and conformity assessment.

General information

• Status: Withdrawn (stage: Withdrawal of International Standard).
• Publication date: December 2012 (2012-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 21.060.20 (Nuts).
• Edition / version: Edition 2 (2012).
• Number of pages: 4.

Scope

This standard applies to prevailing torque type hexagon regular nuts that include a non‑metallic insert and use fine pitch metric threads. It covers nominal thread diameters from 8 mm to 36 mm inclusive, specifies product grades (A and B) for different size ranges, and assigns mechanical property classes 6, 8 and 10. The document is intended to establish dimensional, mechanical and marking characteristics required for manufacture and conformity assessment of these fasteners.

Key topics and requirements

• Definitions and designation of prevailing torque hexagon regular nuts with non‑metallic insert.
• Nominal thread diameters covered: 8 mm to 36 mm (fine pitch metric threads).
• Product grades: Grade A for sizes up to and including 16 mm; Grade B for sizes above 16 mm.
• Specified property classes: 6, 8 and 10 (mechanical strength categories).
• Basic dimensional requirements and tolerances for regular hexagon nut bodies and insert geometry.
• Marking and identification requirements to indicate property class and manufacturer information.
• Requirements related to prevailing torque behaviour and checking procedures (design and manufacture controls implied by the standard).

Typical use and users

Used by fastener manufacturers, product designers, mechanical and structural engineers, quality and inspection personnel, and purchasing/procurement teams specifying prevailing‑torque hexagon nuts for assemblies where vibration resistance or self‑locking behaviour is required. National standards bodies and conformity assessment bodies also reference this standard when assessing product compliance.

Related standards

ISO 10512 is part of a family of ISO standards dealing with prevailing‑torque hexagon nuts (see related numbers such as ISO 10511 and ISO 10513 for other nut heights and types). The ISO 10512:2012 edition has been withdrawn in ISO’s lifecycle and later reconsolidated/superseded in subsequent editions; a 2025 revision (EN ISO 10512:2025 / ISO 10512:2025) has been published as the later consolidated edition.

Keywords

prevailing torque, hexagon nut, non‑metallic insert, fine pitch thread, metric thread, property class, fastener standard, ISO 10512.

FAQ

Q: What is this standard?

A: ISO 10512:2012 is an International Standard that specified requirements for prevailing torque type hexagon regular nuts with non‑metallic inserts and fine pitch metric threads, covering property classes 6, 8 and 10.

Q: What does it cover?

A: It covers the characteristics, dimensions, property classes, product grades and marking requirements for prevailing torque hexagon regular nuts with non‑metallic inserts and fine pitch metric threads for nominal diameters 8 mm to 36 mm.

Q: Who typically uses it?

A: Fastener manufacturers, mechanical designers, quality assurance and inspection personnel, procurement teams, and standards bodies use this standard when specifying or verifying prevailing‑torque hexagon nuts.

Q: Is it current or superseded?

A: ISO 10512:2012 is recorded as withdrawn in ISO’s lifecycle information. A later revision (EN ISO 10512:2025 / ISO 10512:2025) has been published as the updated edition and supersedes earlier editions. Users should refer to the most recent edition (2025) when requiring the current normative requirements.

Q: Is it part of a series?

A: Yes. ISO 10512 is one of several related ISO standards covering prevailing‑torque hexagon nuts (for example, ISO 10511 and ISO 10513 cover related nut types and heights). These documents together address the range of prevailing‑torque hexagon nut forms and classes.

Q: What are the key keywords?

A: Prevailing torque, hexagon nut, non‑metallic insert, fine pitch metric thread, property classes 6/8/10, product grade A/B, fasteners, ISO.