Shop 6425 Straight Female ORB - Female ORB

The Series 6425 Straight Female SAE ORB x Female SAE ORB adapters in carbon steel are high-performance fittings designed to provide secure, leak-free connections in medium and high-pressure hydraulic systems. These adapters use SAE J1926 Straight Thread O-Ring Boss (ORB) connections, which are recommended by the National Fire Protection Association (NFPA) for leak prevention. The male side of the connection features a straight thread with an O-ring, while the female side has a straight thread with a machined surface and chamfer where the O-ring seats. When the components are connected, the O-ring is compressed into the chamfer, forming a reliable mechanical seal. Made from durable carbon steel, these adapters are ideal for industrial applications that require strong, long-lasting connections.

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Straight FORB - FORB Rigid

3/8" to 5/8" Nominal Tube OD

Carbon Steel

Click HERE to view the entire 6425 Straight Carbon Steel FORB-FORB Selection

Click HERE to view the entire 6425-SS Straight Stainless Steel FORB-FORB Selection

Shop 6425 Straight Female ORB - Female ORB, Carbon Steel

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


Product SKU Brand Material Female ORB Threads Female ORB Threads Pressure Rating Lead Time Price
6425-04-04 Brennan Steel 7/16-20 (-04) 7/16-20 (-04) Call to Verify 1-3 Days $3.76
6425-06-06 Brennan Steel 9/16-18 (-06) 9/16-18 (-06) Call to Verify Same Day $4.52
6425-08-08 Brennan Steel 3/4-16 (-08) 3/4-16 (-08) 5000 1-3 Days $5.62
6425-10-10 Brennan Steel 7/8-14 (-10) 7/8-14 (-10) 4500 1-3 Days $7.27
6425-12-12 Brennan Steel 1-1/16-12 (-12) 1-1/16-12 (-12) Call to Verify 1-3 Days $7.72
6425-16-16 Brennan Steel 1-5/16-12 (-16) 1-5/16-12 (-16) Call to Verify 1-3 Days $10.52
6425-20-20 Brennan Steel 1-5/8-12 (-20) 1-5/8-12 (-20) Call to Verify 1-3 Days $92.13
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See the chart below for additional Dimensional Detail & Pressure Ratings




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