Hydraulic Adaptor, 1/4"MP X 3/8"FJX

Hydraulic Adaptor, 1/4"MP X 3/8"FJX

The 6505X0406 Hydraulic Adaptor (1/4" MNPT x 3/8" FJIC Swivel) is a straight hydraulic fitting designed to connect NPT pipe threads to JIC flare hydraulic connections in fluid power systems. Constructed from durable carbon steel and rated for working pressures up to 4000 PSI, this adaptor provides a strong, dependable connection between hydraulic components. The female JIC swivel end simplifies installation by allowing the fitting to rotate into place without twisting hoses or tubing—because hydraulic lines usually behave better when they’re not forced into position.

Country of Origin
Varies by production batch

Key Features / Specifications

• Part Number: 6505X0406
• Product Type: Hydraulic adaptor
• Fitting Shape: Straight
• Material: Carbon Steel
• End 1 Type: Male NPT (MNPT)
• End 1 Size: 1/4" NPT (1/4"-18 tapered thread)
• End 2 Type: Female JIC Swivel (FJIC)
• End 2 Size: JIC 6 (9/16"-18, 37° flare)
• Connection Type: NPT pipe thread to JIC 37° flare
• Working Pressure: Up to 4000 PSI
• Thread Standard: NPT tapered pipe thread and JIC 37° flare
• Function: Adapts 1/4" NPT pipe connections to 3/8" JIC hydraulic fittings
• Construction: Carbon steel body for durability in demanding hydraulic systems

Ideal For

• Hydraulic systems requiring NPT-to-JIC connections
• Farm equipment, construction machinery, and shop hydraulic setups
• Hydraulic repairs and system modifications
• Connecting pipe-thread ports to JIC hydraulic hoses
• Situations where a swivel fitting saves time—and prevents the classic hydraulic installation dance of tightening, loosening, and trying again.