Low-Pressure Hose Tail – BSPT Male Tapered – Straight – Crimp-On

A low-pressure BSP tapered male on a straight crimp tail, for BSPT ports on return and tank lines.

Mild steel body with a plated finish, manufactured to the standard listed above.

This is the tail only – clamps are sold separately

Low-pressure tails are not crimped. They push into the hose and are held with a worm drive clamp over the barb. There is no ferrule and no crimp diameter to set.

• Cut the hose square and push it fully onto the barb, past the last serration.
• Position the clamp over the barbed section, not over the plain shank behind it.
• Nip it up until the hose swells slightly between the serrations. Over-tightening cuts the cover and starts a leak path.
• Two clamps on larger bores, spaced along the barb, on suction and return lines that see vibration.

Watch: How to Identify Hydraulic Hose Fittings and Hydraulic Adaptors JIC and BSP

Thread Standards

• BSP Tapered Male – BSPT to ISO 7 / BS 21, seals on the tapered thread itself, so it needs PTFE tape or a liquid thread sealant

How to Choose

• A straight tail is the default. Only go to a bend when the hose would otherwise leave the port at an angle it does not like.
• Low-pressure duty only.
• The tapered thread seals on itself and needs a sealant rated for hydraulic oil.

Technicians Advice

Hand tight then two or three turns. Low-pressure housings are often alloy or thin-wall steel and they split far more easily than a pressure-rated port.

Where You’ll Find It

• BSP Tapered Male – Older Australian and British pipework, gauge ports, tank and return lines, and cast pump and gearbox housings.

Cross-Reference

• BSP Tapered Male – BSPT to ISO 7 / BS 21, written R for male. Sometimes labelled PT or BSP taper.

Parker, Gates, Aeroquip and Ryco all manufacture to these same standards under their own part numbering, so a fitting built to the standard above will mate with theirs.

Cross-references are given at series level as a guide to the standard, not as a part-for-part substitution. Always confirm the thread form, size and seal type against the port before ordering.

What “low pressure” means here

• These tails are built for the low-pressure side of a system – return lines, case drains, suction lines and tank lines.
• They are not a substitute for a braided-hose pressure tail. If the line sees pump pressure, use a two-piece tail on 1‑wire or 2‑wire hose instead.
• The working pressure of the finished assembly is set by the lowest-rated part in it – usually the hose. Check the hose rating and match the tail to it, not the other way round.
• Suction and return lines run at low pressure but move a lot of oil. Size on bore and flow, not on the thread you happen to have spare.

Downloads

📄 Thread Identification Chart (PDF)

Same Threads, Other Angles

🔗 90° Compact – same threads

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Ayrtec two-piece crimp-on hose tails, stocked and dispatched by Hydraulic.Online.

Need a hand? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.