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

A heavy series metric male cone one end and a metric bulkhead body the other. The same S series panel pass-through with the bulkhead leg on the opposite side.

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 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.
• 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.

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.
• Check which side of the panel the bulkhead leg needs to sit before you order. This one is the mirror of MBM-MHM.
• Heavy (S) and light (L) do not interchange.

Technicians Advice

Work out the panel side first. Fitting the mirror version means the locknut lands on the wrong face and you either turn the whole assembly round or live with a fitting that does not sit flush.

Where You’ll Find It

• Metric Heavy (S) Male – European machinery on the pressure side, where working pressures exceed the light series rating.
• 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.

Cross-Reference

• Metric Heavy (S) Male – DIN 2353 / ISO 8434-1 24° cone, heavy (S) series. Parker EO / EO-2.
• 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.

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
MHM-MBM-1818	59mm	Mild steel	Plated finish
MHM-MBM-2424	65mm	Mild steel	Plated finish
MHM-MBM-1414	55mm	Mild steel	Plated finish
MHM-MBM-1616	56mm	Mild steel	Plated finish
MHM-MBM-2020	60mm	Mild steel	Plated finish
MHM-MBM-2222	65mm	Mild steel	Plated finish
MHM-MBM-3030	72mm	Mild steel	Plated finish
MHM-MBM-3636	79mm	Mild steel	Plated finish
MHM-MBM-4242	86mm	Mild steel	Plated finish
MHM-MBM-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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Need a hand? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.