Shop 6408-O External Hex Male ORB Plugs
SAE 090109A
The Series 6408-O External Hex Male ORB Plugs are high-quality fittings designed to seal unused ORB (O-Ring Boss) ports in hydraulic and fluid power systems. Made from carbon steel, these plugs feature an external hex design, allowing for easy installation and removal using standard wrenches. The ORB threads ensure a secure, leak-free seal through metal-to-metal contact and compression of the O-ring in the mating surface. Ideal for preventing fluid leakage in high-pressure applications, the Series 6408-O plugs are reliable, durable, and provide excellent performance in fluid transfer systems, making them a crucial component for system maintenance and testing.
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Shop 6408-O External Hex Male ORB Plugs, Carbon Steel
Click on the model number in the chart below to view that adapter.
Need Stainless Steel? Click HERE for our Stainless 6408-O-SS Series Adapters. All adapters may not be available in stainless.
| Product SKU ▼ | Brand ▼ | Material ▼ | Male ORB Threads ▼ | Lead Time ▼ | Price ▼ |
|---|---|---|---|---|---|
| 6408-02-O | OneHydraulics | Steel | 5/16-24 (-02) | 1-3 Days | $1.07 |
| 6408-04-O | OneHydraulics | Steel | 7/16-20 (-04) | Same Day | $1.18 |
| 6408-05-O | OneHydraulics | Steel | 1/2-20 (-05) | Same Day | $1.47 |
| 6408-06-O | OneHydraulics | Steel | 9/16-18 (-06) | 1-3 Days | $1.47 |
| 6408-08-O | OneHydraulics | Steel | 3/4-16 (-08) | Same Day | $1.97 |
| 6408-10-O | OneHydraulics | Steel | 7/8-14 (-10) | 1-3 Days | $2.69 |
| 6408-12-O | OneHydraulics | Steel | 1-1/16-12 (-12) | Same Day | $4.01 |
| 6408-14-O | OneHydraulics | Steel | 1-3/16-12 (-14) | 1-3 Days | $5.70 |
| 6408-16-O | OneHydraulics | Steel | 1-5/16-12 (-16) | Same Day | $5.28 |
| 6408-20-O | OneHydraulics | Steel | 1-5/8-12 (-20) | 1-3 Days | $7.16 |
| 6408-24-O | OneHydraulics | Steel | 1-7/8-12 (-24) | Same Day | $7.66 |
| 6408-32-O | OneHydraulics | Steel | 2-1/2-12 (-32) | 1-3 Days | $15.35 |
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Items in this collection are equivalent or similar to Series Aeroquip 900598, Dayco 6408, Flodar R77, Form Rite 64, Gates MB-PLUG, Imperial 721-FSO, L&L SA-17, Lenz A3105P, Parker Tube P50N, Parker Hose 05CP, Piper 510, SSP GP, Strata Flex 16339-[R], Trident 1255, United Tech 33, Weatherhead 7237.


See the chart below for additional Dimensional Detail & Pressure Ratings

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












