Overview
ISO 10513:2012 is an international standard published by the International Organization for Standardization (ISO). It defines the specifications for prevailing torque type all-metal hexagon high nuts with metric fine pitch threads. This standard applies to nuts with nominal thread diameters (D) ranging from 8 mm to 36 mm inclusive, covering product grades A (for diameters up to 16 mm) and B (for diameters greater than 16 mm). The nuts are classified under property classes 8, 10, and 12 based on their mechanical performance.
This revision, issued in 2012, replaces the first edition from 1997 with minor revisions. ISO 10513:2012 ensures uniformity in dimensions, mechanical properties, and tolerances, contributing to reliable fastening solutions in various industrial applications.
Key Topics
Dimensions and Threading
- Metric fine pitch thread sizes from M8 to M36 are specified with detailed dimensions, including nut height, width, and thread pitch.
- Thread tolerance class 6H is mandated to ensure consistency in fit and function.
Property Classes
- Property classes 8, 10, and 12 define the mechanical strength categories for the nuts.
- Classes 8 and 10 cover a broader diameter range, while class 12 is not specified for diameters greater than 16 mm.
Grades and Tolerances
- Product grade A applies to nuts with nominal diameters up to 16 mm.
- Product grade B applies to nuts with diameters exceeding 16 mm.
- Tolerances conform to internationally recognized metrics ensuring interchangeability.
Performance Requirements
- The nuts exhibit prevailing torque locking capability by means of an all-metal design, eliminating the need for additional locking elements.
- Surface integrity and acceptance inspection follow stringent criteria to assure quality and durability.
- Specified materials are high-strength steel meeting ISO 898-2 mechanical performance standards.
Referenced Standards
Applications
ISO 10513:2012 nuts are critical components in the assembly of machinery and structural applications where secure fastening with fine pitch threads is necessary. Typical uses include:
- Automotive manufacturing where vibration resistance and high mechanical performance are required.
- Aerospace and precision engineering sectors demanding reliable locking fasteners under severe service conditions.
- Heavy machinery and construction equipment applying high-strength all-metal nuts for durability.
- Industrial fastening systems needing standardized nuts to ensure compatibility with fine pitch metric bolts.
The prevailing torque feature of these nuts provides a reusable, metal-to-metal locking mechanism, ideal for maintenance scenarios where repeated assembly and disassembly occur.
Related Standards
For comprehensive fastener specification and selection, ISO 10513:2012 is closely related to the following standards:
- ISO 8674: Hexagon high nuts with metric fine pitch threads, grades A and B dimensions reference.
- ISO 898-2: Details mechanical properties of nuts made from carbon and alloy steel.
- ISO 2320: Performance characteristics of prevailing torque steel nuts.
- ISO 4759-1: Tolerance grades for screws, studs, and nuts including grades A, B, and C.
- ISO 4042 and ISO 10683: Specifications for fastener coatings (electrolytic and non-electrolytic zinc).
- ISO 3269: Acceptance inspection for fasteners.
- ISO 6157-2: Surface defect limits for nuts.
Adhering to this integrated suite of ISO standards ensures the selection of appropriate fasteners that meet stringent quality, performance, and safety demands globally.
ISO 10513:2012 helps manufacturers, engineers, and quality control professionals reliably identify and utilize prevailing torque all-metal hexagon high nuts with fine metric threads, enhancing fastening security in diverse industrial applications. Keywords: ISO 10513, prevailing torque nuts, metric fine pitch thread, hexagon high nuts, property classes 8 10 12, ISO fastener standards, all-metal nuts.
Open preview (PDF)Prevailing torque type all-metal hexagon high nuts with metric fine pitch thread — Property classes 8, 10 and 12