ISO 11148-6:2012

Overview

ISO 11148-6:2012 - Hand-held non-electric power tools - Safety requirements - Part 6: Assembly power tools for threaded fasteners specifies safety requirements for hand‑held, non‑electric assembly tools used to tighten or install threaded fasteners. It applies to pneumatic, hydraulic and internal‑combustion‑driven tools intended for single‑operator hand support (with or without a balancer). Covered tool types include air‑hydraulic impulse wrenches, impact wrenches, nutrunners, fastener installation tools, ratchet wrenches, open‑ended spanners (crow‑foot) and screwdrivers. The standard addresses significant hazards for intended use and reasonably foreseeable misuse, excluding use in potentially explosive atmospheres and fixture‑mounted modifications.

Key Topics

ISO 11148-6 organizes technical requirements and verification into clear areas:

• Safety requirements and protective measures - mechanical, thermal and material safety measures to reduce injury risk.
• Controls and start/stop devices - definitions and requirements for hold‑to‑run, lock‑on/lock‑off and positive on/off throttles.
• Ergonomics - tool design, suspension, weight and operator interaction to limit musculoskeletal hazards.
• Noise and vibration - mandates measurement and reduction approaches; references to vibration and noise test methods.
• Materials and emissions - handling of substances processed, used or exhausted by the tool.
• Verification and testing - test conditions and procedures for noise, vibration, unintentional start and construction checks.
• Information for use - marking, safety labels, instructions for use, maintenance guidance and data reporting.
• Normative and informative annexes - include lists of significant hazards (Annex A), examples of covered tools (Annex B), label symbols (Annex C) and additional ICE requirements (Annex D).

Applications and Users

Who uses ISO 11148-6 and why:

• Tool manufacturers and designers - to design compliant hand‑held non‑electric assembly tools (nutrunners, impact wrenches, screwdrivers).
• Safety engineers and compliance officers - for risk assessment, verification and certification of product safety.
• Test laboratories - to perform noise, vibration and unintentional‑start tests in line with the standard.
• Procurement specialists and maintenance teams - to specify safe tools and ensure correct operation, labeling and maintenance instructions.
• Training and technical documentation authors - to prepare user manuals and safety warnings that meet ISO requirements.

Practical uses include product development, conformity assessment, procurement specs, workplace risk reduction, and operator training.

Related Standards

• ISO 11148 series (other parts for different tool types)
• ISO 12100 (machine safety - risk assessment and reduction)
• ISO 15744, ISO 28927-2 and ISO 20643 (noise and vibration testing/methods)
• ISO 7000 / ISO 7010 (graphical symbols and safety signage)
• EN 13463-1 (requirements for non‑electrical equipment in explosive atmospheres - relevant as an exclusion note)

Keywords: ISO 11148-6, assembly power tools for threaded fasteners, hand-held non-electric power tools, safety requirements, nutrunners, impact wrench, vibration measurement, noise measurement.