BSPT 1/8" to 6mm Barbed Hose Converter

These hose connectors are great for both liquids and gases. The barbed shaft increases the coefficient friction between the connector and the hose decreasing the chance of the hose being pulled of whilst in use. The hose fitting is made from brass and thus giving it a longer life than PVC or rubber versions.

Quick Spec

• Material: Brass
• Male BSP tapered thread
• Size: 1/8"
• Thread tapered in conformity to ISO 7.1, BS 21, DIN 2999
• Max. Pressure: 10 BAR
• Working Pressure: 170 psi
• Net Weight: 5g

Dimensions

BSP Threads

BSP thread form stands for British Standard Pipe and is common in Australia and the commonwealth countries. It is based on trade size rather than actual diameter which can lead to some confusion when measuring ports.

There are two types of BSP threads;

• BSPP - Female & male thread are both (also known as G)
• BSPT - Female thread is parallel and the male thread is tapered (also know as R/Rp) (the female thread can also be tapered it is then Rc, these are fairly rare to find). Within BSPT it is also common to call the female thread BSPP (parallel) and the male BSPT (tapered) even though they are both technically a BSPT thread form (the female would be parallel and the male would be tapered)

Both threads have the same pitch, angle (55 degrees) and shape (rounded peaks and valleys).

The below table gives the major and minor diameter for each BSP Trade Thread Size. The minor diameter may be ever so slightly smaller than what is in the table depending upon where it has been manufactured to in the thread gauge.

How to Measure Threads

To identify the trade size of the thread, first it must be determined whether the thread is tapered or parallel. This is done by measuring the first, fourth/fifth and last full thread. If the diameter increases from first thread to the last thread on a male thread or decreases from first to last thread on a female thread, then the thread is classified as a tapered thread (such as BSPT). If the diameter stays the same from the first to last thread then the thread is classified as a parallel thread (BSPP).



Once it is known whether the thread is parallel or tapered, it can be measured to determine it’s trade size. This trade size will not directly represent what is measured, ie. ½" BSP does not equal ½” measured.

For a parallel thread, any thread can be used to measure for its trade size, and for a tapered thread the fourth or fifth full thread is used. This measurement can then be referenced against a thread table to match it to its trade size.

Shipping List

• 1 x BSPT 1/8" to 6mm Barbed Hose Converter