ISO 10511-2012 PDF

Full title and description

ISO 10511:2012 — Prevailing torque type hexagon thin nuts (with non‑metallic insert). This International Standard specifies the characteristics, dimensions and designation for prevailing‑torque hexagon thin nuts with a non‑metallic insert, covering metric thread sizes M3 to M36 and intended product grades and property classes as defined in the standard.

Abstract

ISO 10511:2012 defines dimensional limits, product grades and basic requirements for prevailing torque type hexagon thin nuts incorporating a non‑metallic insert. The 2012 edition covers thread sizes M3 through M36, specifies product grade A (for threads up to M16) and product grade B (for threads above M16), and addresses applicable property classes. The 2012 edition has subsequently been withdrawn and a new consolidated edition was published in 2025.

General information

• Status: Withdrawn (superseded by a later edition).
• Publication date: December 2012 (corrected French text issued July 2013).
• Publisher: ISO — International Organization for Standardization.
• ICS / categories: 21.060.20 — Nuts.
• Edition / version: Edition 2 (2012).
• Number of pages: 4.

Scope

Specifies the characteristics and dimensions of prevailing torque type hexagon thin nuts with a non‑metallic insert. Applies to metric coarse‑pitch threads from M3 up to and including M36, with product grade A for threads up to and including M16 and product grade B for threads above M16. Provides designation rules and references for related mechanical and material requirements; it does not cover all aspects of mechanical performance (which are addressed in related product and material standards).

Key topics and requirements

• Dimensional requirements for hexagon thin nuts (key diameters, pitch, heights and tolerances for sizes M3–M36).
• Specification of prevailing‑torque feature incorporating a non‑metallic insert and maximum feature heights.
• Product grade definitions (A and B) and which thread sizes they apply to.
• Designation and marking conventions for identification of nut type, size and property class.
• Normative references to related fastener and material standards for thread, property class and performance requirements.
• Notes on limits of applicability (thin nuts have reduced loadability compared with regular or high nuts).

Typical use and users

Used by fastener manufacturers, product designers, mechanical and structural engineers, procurement/specification writers, quality‑control laboratories and standards committees. Typical applications include equipment assembly and design where prevailing‑torque thin nuts are required to resist vibration loosening while meeting dimensional interchangeability with mating bolts and threads.

Related standards

Commonly used alongside other fastener and thread standards such as ISO 898‑2 (mechanical properties of nuts), ISO 4035 (hexagon thin nuts — style 0), ISO 4014/4016 (hexagon head bolts), ISO 4032 (hexagon regular nuts), and other ISO/CEN fastener product and material standards that define property classes, stainless steel grades and test methods.

Keywords

prevailing torque nut, thin nut, hexagon nut, non‑metallic insert, locknut, fastener standard, metric thread, M3–M36, product grade A, product grade B, property class

FAQ

Q: What is this standard?

A: ISO 10511:2012 specifies dimensions and characteristics for prevailing torque type hexagon thin nuts fitted with a non‑metallic insert (metric thread sizes M3–M36).

Q: What does it cover?

A: It covers geometric dimensions, designation, product grades and basic requirements for thin prevailing‑torque hexagon nuts with non‑metallic inserts; it does not replace material or mechanical property standards referenced for strength and performance.

Q: Who typically uses it?

A: Fastener manufacturers, design and production engineers, purchasing/specification teams, test laboratories and conformity assessment bodies working with metric hexagon thin locknuts.

Q: Is it current or superseded?

A: The 2012 edition is withdrawn and has been superseded by a later edition (ISO 10511 published in 2025). Users specifying fasteners should reference the 2025 edition for the most current requirements.

Q: Is it part of a series?

A: Yes. ISO 10511 is one of several ISO documents covering prevailing‑torque and locknut types and belongs to the family of ISO fastener standards managed by ISO/TC 2 (fasteners). Earlier and related editions exist (1997, 2012) and the series has been consolidated in the 2025 edition.

Q: What are the key keywords?

A: Prevailing torque, thin nut, hexagon nut, non‑metallic insert, metric thread, locknut, product grade A, product grade B, property class.