Metric Bulkhead Male x Metric Heavy (S) Male Straight Bulkhead Adaptor

A metric bulkhead body one end and a heavy series metric male cone the other. Carries a high-pressure S series tube run through a panel on European-built machinery.

Brand: Ayrtec – mild steel body with a plated finish, manufactured to the standards listed below.

Watch: The Advantages of Hydraulic Bulkhead Fittings: Essential Components for Fluid Systems

Thread Standards

• Metric Bulkhead Male – DIN 2353 / ISO 8434-1 24° cone on a bulkhead body with a locknut. It seals on the 24° cone; the bulkhead thread and locknut clamp the body to the panel and do no sealing.
• Metric Heavy (S) Male – DIN 2353 / ISO 8434-1 24° cone, heavy series. It seals on the 24° cone and is built for higher pressures than the light series.

How to Choose

• The bulkhead thread and locknut clamp the fitting to the panel. They do no sealing, so do not try to cure a leak by tightening the locknut.
• Check your panel hole size and thickness before you order. The body has a set thread length under the shoulder and a thick panel eats it.
• Heavy (S) will not seal in a light (L) port even where the thread starts. Check the series on the mating nut.
• Look into the mating cone for a captured O-ring before fitting.

Technicians Advice

The cone does the sealing and the nut only supplies the load. If it weeps after the locknut is tight, take it apart and look at the cone face rather than reaching for a longer bar.

Where You’ll Find It

• Metric Bulkhead Male – panel, chassis and tank-wall pass-throughs on European-built machinery – Liebherr, Wacker Neuson, Atlas, Manitou – and any tidy tube-work build.
• Metric Heavy (S) Male – European machinery on the pressure side, where working pressures exceed the light series rating.

Cross-Reference

• Metric Bulkhead Male – DIN 2353 / ISO 8434-1 24° cone, bulkhead style. Parker call this range EO and EO-2. Available in both light (L) and heavy (S) series, which do not interchange.
• Metric Heavy (S) Male – DIN 2353 / ISO 8434-1 24° cone, heavy (S) series. Parker EO / EO-2.

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.

📐Dimensions & thread sizes – every size in this range

← Swipe the table sideways to see every measurement →

Part code	L	Material	Finish
MBM-MHM-1414	55mm	Mild steel	Plated finish
MBM-MHM-1616	56mm	Mild steel	Plated finish
MBM-MHM-1818	59mm	Mild steel	Plated finish
MBM-MHM-2020	60mm	Mild steel	Plated finish
MBM-MHM-2222	65mm	Mild steel	Plated finish
MBM-MHM-2424	65mm	Mild steel	Plated finish
MBM-MHM-3030	72mm	Mild steel	Plated finish
MBM-MHM-3636	79mm	Mild steel	Plated finish
MBM-MHM-4242	86mm	Mild steel	Plated finish
MBM-MHM-5252	91mm	Mild steel	Plated finish

Key: L overall length. Measurements in millimetres unless shown otherwise. Thread columns show what each end mates with. Dimensions are nominal – check critical clearances against the part.

Downloads

📄 Thread Identification Chart (PDF)

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