ISO 10208-1991 PDF
Name in English:
St ISO 10208-1991
Name in Russian:
Ст ISO 10208-1991
Original standard ISO 10208-1991 in PDF full version. Additional info + preview on request
Full title and description
ISO 10208:1991 — Rock drilling equipment — Left-hand rope threads. This international standard specifies the form, dimensions and tolerances for left-hand rope threads used on rope‑threaded drill steel for percussive rock drilling, giving a set of standard thread dimensions to ensure interchangeability and safe mechanical connection of drill components.
Abstract
Defines dimensions and tolerances of left-hand rope threads to be used on rope‑threaded drill steel equipment for percussive drilling. The document provides five sets of standardized thread values (profiles and dimensional tolerances) to cover common rope‑threaded drill steel applications and to replace earlier withdrawn specifications.
General information
- Status: Published (confirmed in review; remains current).
- Publication date: 24 January 1991 (Edition 1, 1991).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 73.100.30 — Equipment for drilling and mine excavation.
- Edition / version: Edition 1 (1991).
- Number of pages: 2.
Scope
Specifies the geometry, nominal sizes and tolerances of left‑hand rope threads intended for use on rope‑threaded drill steel for percussive (down‑the‑hole and similar) rock drilling equipment. The standard gives five sets of thread dimensions to cover commonly used drill‑steel connections and ensures dimensional interchangeability and proper mechanical engagement between mating parts.
Key topics and requirements
- Definition of left‑hand rope thread form for rock drilling applications.
- Dimensional nominal sizes and corresponding tolerances (five sets of values).
- Requirements to ensure interchangeability of rope‑threaded drill steel components.
- Machining and inspection-related dimensional limits relevant to manufacture and acceptance.
- Reference to thread orientation and mating‑part requirements for safe assembly in percussive drilling.
Typical use and users
Used by manufacturers of drill steel, rock drilling tool suppliers, mechanical and drilling engineers, quality and inspection laboratories, procurement specialists specifying drill‑string components, and standards committees. Typical applications include specifying connection geometry for down‑the‑hole drill steel, tooling adapters and replacement parts to ensure compatibility across suppliers.
Related standards
Replaces or consolidates earlier documents on rope threads for drilling equipment and is published under the responsibility of ISO/TC 82 (rock drilling equipment). Related documents include the withdrawn ISO 1719 and ISO 1720, as well as other ISO standards and national standards covering drill tooling, thread forms and drilling equipment dimensions within ICS 73.100.30.
Keywords
rock drilling; drill steel; rope threads; left‑hand thread; thread dimensions; tolerances; percussive drilling; ISO 10208.
FAQ
Q: What is this standard?
A: ISO 10208:1991 is an international standard that specifies left‑hand rope thread forms, dimensions and tolerances for rope‑threaded drill steel used in percussive rock drilling.
Q: What does it cover?
A: It covers the geometry, nominal sizes and tolerance limits for left‑hand rope threads, providing five sets of standardized values to ensure interchangeability and correct mating of drill steel components.
Q: Who typically uses it?
A: Manufacturers of drill steel and drill accessories, drilling and mechanical engineers, inspection and quality teams, procurement professionals, and standards bodies involved in drilling equipment specification and compliance.
Q: Is it current or superseded?
A: ISO 10208:1991 was published in 1991 (Edition 1) and has been maintained in ISO's review cycle; it remains published and was confirmed in a later review. It replaced earlier ISO documents on similar rope‑thread forms.
Q: Is it part of a series?
A: It is part of the body of ISO standards administered by ISO/TC 82 for rock drilling equipment and relates to other standards in the same ICS category (73.100.30), but it is a standalone document focused specifically on left‑hand rope threads.
Q: What are the key keywords?
A: rock drilling, rope threads, left‑hand thread, drill steel, percussive drilling, thread dimensions, tolerances, ISO 10208.