BSP Size Conversion Chart

Lots of our connectors feature BSP thread sizes. We stock a range of items from 1/2" BSP to 4" BSP fittings. 
A helpful size conversion guide from BSP to mm can be found below: 

• 1/2" BSP = 20.99mm
• 3/4" BSP = 26.44mm
• 1" BSP = 33.25mm
• 1.25" BSP = 41.91mm
• 1.5" BSP = 47.80mm
• 2" BSP = 59.61mm
• 3" BSP = 87.88mm
• 4" BSP = 113.03mm

Please ensure you follow this guide and check which size is required for your use case prior to purchase.

The information here is provided for guidance only. If more clarification and accuracy is required, you should refer to the relevant standard.