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Engineering > Mechanical systems and components > Screw threads

Screw threads

Screw threads Sub-categories (4)

  1. Screw threads. General
  2. Screw threads. Metric
  3. Screw threads. Inch
  4. Screw threads. Special

Latest standards activities

Proposals
Drafts

BS ISO 965-6

ISO 965-6 ISO general purpose metric screw threads. Tolerances. Part 6: Limits of sizes for internal and external threads (Fine and medium tolerance qualities, first and second choices)

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19/11/2024

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Published

BS ISO 68-2:2023

ISO general purpose screw threads. Basic and design profiles. Inch screw threads

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BS ISO 68-1:2023

ISO general purpose screw threads. Basic and design profiles. Metric screw threads

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BS EN ISO 11363-1:2018+A1:2023

Gas cylinders. 17E and 25E taper threads for connection of valves to gas cylinders. Specifications

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BS ISO 724:2023

ISO general purpose metric screw threads. Basic dimensions

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BS ISO 262:2023

ISO general purpose metric screw threads. Selected sizes for bolts, screws, studs and nuts

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BS ISO 965-1:2013+A1:2021

ISO general purpose metric screw threads. Tolerances. Principles and basic data

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BS ISO 965-3:2021

ISO general purpose metric screw threads. Tolerances. Limit deviations for screw threads

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BS ISO 965-5:1998+A1:2021

ISO general purpose metric screw threads. Tolerances. Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing

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