Hydraulic Adaptor, 1/4"MB X 3/8"FPX

Hydraulic Adaptor, 1/4"MB X 3/8"FPX

The 6900X0406 Hydraulic Straight Adapter connects 1/4 in Male SAE O-Ring Boss (ORB) ports to 3/8 in Female NPT swivel connections, allowing hydraulic systems to transition between ORB and NPT thread standards. The straight adapter configuration maintains direct fluid flow, while the female NPT swivel end simplifies installation and alignment in tight hydraulic plumbing layouts. Constructed from durable carbon steel and rated for working pressures up to 5000 PSI, this adapter is built to perform reliably in demanding hydraulic systems.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 6900X0406
• Product Type: Hydraulic straight adapter
• Fitting Shape: Straight
• Adapter Configuration: Male to Female
• End 1 Type: Male SAE O-Ring Boss (ORB)
• End 1 Size: SAE 4
• End 1 Thread: 7/16–20 ORB
• End 2 Type: Female NPT Swivel
• End 2 Size: 3/8 in NPT
• End 2 Thread: 3/8–18 NPT (tapered)
• Connection Type: ORB to NPT swivel
• Material: Carbon Steel
• Maximum Working Pressure: 5000 PSI

Ideal For

• Connecting ORB hydraulic components to NPT threaded ports
• Hydraulic plumbing and fitting conversions
• Agricultural, construction, and industrial hydraulic equipment
• Systems operating at pressures up to 5000 PSI
• Situations where a proper adapter keeps hydraulic plumbing neat instead of turning it into a stack of mismatched fittings