Shop High Pressure Adapters, Male BSP x Male Medium Pressure

The Medium Pressure Male to BSP Male OneXtreme Adapters are precision-engineered conversion fittings designed to connect medium pressure coned-and-threaded systems to BSPP (British Standard Parallel Pipe) connections in demanding hydraulic and fluid power applications. The medium pressure side utilizes a 60-degree cone and thread connection to create a reliable metal-to-metal seal commonly used in systems up to 20,000 psi (1379 bar), while the BSPP side features straight (parallel) threads that seal via a cone, gasket, O-ring, or dowty seal depending on the mating configuration, and may also include an external cone.


Manufactured from cold worked 316 stainless steel, these adapters provide exceptional strength, corrosion resistance, and durability in harsh operating environments, with special materials available upon request to meet specific application requirements. Because this adapter bridges two connection types and pressure classes, the overall system capability must always be based on the lower-rated side and associated components.

Warning: Proper thread identification, sealing method selection, and installation practices are critical—mismatched threads, damaged sealing surfaces, or improper assembly can result in leaks or catastrophic failure; always verify compatibility with mating components and follow recommended installation procedures before use.

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High Pressure Adapters

Up to 20,000psi (varies by size)

1/4" to 1/2" 

316 Stainless Steel (Customs available upon Request)

Click HERE to view the OneXtreme Catalog

Click HERE to view the entire High Pressure MBSP-MMP Collection

Series 207, Male BSP x Male MP

Click on the model number in the chart below to view that adapter. 

ALL ADAPTERS SHOWN BELOW ARE 316 STAINLESS, MADE IN USA.

Product SKU Male MP Side Male BSP Side Pressure Rating Lead Time Price
X4M04B20 0.25 (1/4") 0.25 (1/4") 20000 4-6 Weeks $48.05
X4M04BEXT20 0.25 (1/4") 0.25 (1/4") 20000 4-6 Weeks $46.48
X6M06B20 0.375 (3/8") 0.375 (3/8") 20000 4-6 Weeks $49.31
X9M04B20 0.5625 (9/16") 0.25 (1/4") 20000 4-6 Weeks $56.75
X9M06B20 0.5625 (9/16") 0.375 (3/8") 20000 4-6 Weeks $56.75
X9M08B20 0.5625 (9/16") 0.5 (1/2") 20000 4-6 Weeks $67.62
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Technical Specs



Still need help? Give us a call at 281.941.2310 or email us at sales@onehydraulics.com for technical support.