Overview of different Thread Standards

English: Screws with different thread types. From left to right:

Metric M12, 40 mm long (ISO 4017, Strength 8.8)
Metric Fine M12x1.25, 40mm long (ISO 8676, Strength 8.8)
Metric Fine M12x1.5, 40mm long
United thread Standard Coarse UNC 1/2 inch, 1.5 inch long (Strength Grade 5 ( ~ 8.8 ). Dimensions in metric would be 12.7mm by 38.1mm)
United thread Standard Fine UNF 1/2 inch, 1.5 inch long (Strength Grade 5 ( ~ 8.8 ). Dimensions in metric would be 12.7mm by 38.1mm)
British Withworth BSW 1/2 inch, 1.5 inch long. (Dimensions in metric would be 12.7mm by 38.1mm)

All screws with hex bolt heads, although they also differ slightly in size depending on the standard.

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By Christoph Roser at AllAboutLean.com under the free CC-BY-SA 4.0 license.

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Date: October 21, 2017
SEO Title: Overview of different Thread Standards
SEO Description: English: Screws with different thread types. From left to right: Metric M12, 40 mm long (ISO 4017, Strength 8.8); Metric Fine M12x1.25, 40mm long (ISO 8676, Strength 8.8); Metric Fine M12x1.5, 40mm long; United thread Standard Coarse UNC 1/2 inch, 1.5 inch long (Strength Grade 5 ( ~ 8.8 ). Dimensions in metric would be 12.7mm by 38.1mm); United thread Standard Fine UNF 1/2 inch, 1.5 inch long (Strength Grade 5 ( ~ 8.8 ). Dimensions in metric would be 12.7mm by 38.1mm); British Withworth BSW 1/2 inch, 1.5 inch long. (Dimensions in metric would be 12.7mm by 38.1mm); All screws with hex bolt heads, although they also differ slightly in size depending on the standard.
SEO Keywords: screw, threads, standards, metric, fine, withworth, BSW, UTF, UTC, M12
Post or page attached: Fertigungstechnik für Führungskräfte – Dritte Ausgabe, Fertigungstechnik für Führungskräfte – Zweite Ausgabe, Fertigungstechnik für Führungskräfte – Erste Ausgabe, Fertigungstechnik für Führungskräfte, The Challenges of Material Supply for Assembly, 230 Years of Interchangeable Parts – A Brief History,

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