Description
1/4″ OD tube to 1/2″ BSP Straight fitting.
1/2″ BSP = Approximnately 19mm outer diameter, across the thread.
Suits 1/4″ high pressure tubing (measures approximately 6mm outer diameter). This type of tubing is often used for under sink water filter systems.
Thread Type and Size Chart
BSP size (British Standard Pipe)
Actual Diameter Imperial Actual Diameter Metric
1/8” BSP 0.35 inch 9 mm
1/4” BSP 1/2 inch 12 mm
3/8” BSP 6/10 inch 15 mm
1/2” BSP 3/4 inch 19 mm
3/4″ BSP 1 inch 25 mm
1” BSP 1 & 1/4 inch 31 mm
1 & 1/4″ BSP 1 & 2/3 inch 40 mm
1 & 1/2″ BSP 1 & 3/4 inch 45 mm
2” BSP 2 & 1/4 inch 57 mm
UNS size (Unified National Special)
Actual Diameter Imperial Actual Diameter Metric
7/16” UNS 0.4375” 11 mm
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