Shop 6401-O-SS Straight Male ORB - Male NPT, Stainless Steel
The Series 6401-O-SS Straight Male ORB x Male NPT hydraulic adapters, made of high-quality stainless steel, provide reliable, leak-free connections for fluid and gas transfer in hydraulic systems. The male ORB (SAE Straight Thread O-ring Boss) connection uses a straight UNF thread with an O-ring, creating a leak-tight seal when compressed against a smooth, flat surface with a chamfer, as recommended by the National Fire Protection Association (NFPA) for medium and high-pressure systems. The male NPT (National Pipe Taper) connection uses tapered threads to form a metal-to-metal seal, ideal for single assembly applications. The nominal pipe size can be identified by measuring the thread diameter and subtracting 1/4". NPT connections are not recommended for frequent disassembly due to potential wear on the threads. These adapters are ideal for professionals seeking durable, efficient, and high-performance hydraulic solutions in various applications.
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Shop 6401-O Straight Male ORB - Male NPT, Carbon Steel
Click on the model number in the chart below to view that adapter.
Need Carbon Steel? Click HERE for our Steel 6401-O Series Adapters.
| Product SKU â–Ľ | Brand â–Ľ | Material â–Ľ | Pressure Rating â–Ľ | Male ORB Threads â–Ľ | Male NPT Threads â–Ľ | Lead Time â–Ľ | Price â–Ľ |
|---|---|---|---|---|---|---|---|
| 6401-04-02-O-SS | OneHydraulics | Stainless Steel | 7200 | 7/16-20 (-04) | 1/8-27 (-02) | 1-3 Days | $7.42 |
| 6401-04-04-O-SS | OneHydraulics | Stainless Steel | 7200 | 7/16-20 (-04) | 1/4-18 (-04) | 1-3 Days | $7.49 |
| 6401-05-04-O-SS | OneHydraulics | Stainless Steel | 7200 | 1/2-20 (-05) | 1/4-18 (-04) | 1-3 Days | $129.42 |
| 6401-06-04-O-SS | OneHydraulics | Stainless Steel | 7200 | 9/16-18 (-06) | 1/4-18 (-04) | 1-3 Days | $10.50 |
| 6401-06-06-O-SS | OneHydraulics | Stainless Steel | 7200 | 9/16-18 (-06) | 3/8-18 (-06) | 1-3 Days | $11.43 |
| 6401-06-08-O-SS | OneHydraulics | Stainless Steel | 7200 | 9/16-18 (-06) | 1/2-14 (-08) | 1-3 Days | $38.93 |
| 6401-08-04-O-SS | OneHydraulics | Stainless Steel | 7200 | 3/4-16 (-08) | 1/4-18 (-04) | 1-3 Days | $109.47 |
| 6401-08-06-O-SS | OneHydraulics | Stainless Steel | 7200 | 3/4-16 (-08) | 3/8-18 (-06) | 1-3 Days | $15.98 |
| 6401-08-08-O-SS | OneHydraulics | Stainless Steel | 7200 | 3/4-16 (-08) | 1/2-14 (-08) | 1-3 Days | $13.65 |
| 6401-08-12-O-SS | OneHydraulics | Stainless Steel | 6600 | 3/4-16 (-08) | 3/4-14 (-12) | 1-3 Days | $122.10 |
| 6401-10-08-O-SS | OneHydraulics | Stainless Steel | 7200 | 7/8-14 (-10) | 1/2-14 (-08) | 1-3 Days | $68.44 |
| 6401-12-08-O-SS | OneHydraulics | Stainless Steel | 7200 | 1-1/16-12 (-12) | 1/2-14 (-08) | 1-3 Days | $92.02 |
| 6401-12-12-O-SS | OneHydraulics | Stainless Steel | 6600 | 1-1/16-12 (-12) | 3/4-14 (-12) | 1-3 Days | $23.10 |
| 6401-12-16-O-SS | OneHydraulics | Stainless Steel | 5400 | 1-1/16-12 (-12) | 1-11-1/2 (-16) | 1-3 Days | $145.35 |
| 6401-16-12-O-SS | OneHydraulics | Stainless Steel | 6600 | 1-5/16-12 (-16) | 3/4-14 (-12) | 1-3 Days | $31.42 |
| 6401-16-16-O-SS | OneHydraulics | Stainless Steel | 5400 | 1-5/16-12 (-16) | 1-11-1/2 (-16) | 1-3 Days | $38.27 |
| 6401-20-16-O-SS | OneHydraulics | Stainless Steel | 3600 | 1-5/8-12 (-20) | 1-11-1/2 (-16) | 1-3 Days | $217.18 |
| 6401-20-20-O-SS | OneHydraulics | Stainless Steel | 3600 | 1-5/8-12 (-20) | 1-1/4-11-1/2 (-20) | 1-3 Days | $192.62 |
| 6401-24-24-O-SS | OneHydraulics | Stainless Steel | 3600 | 1-7/8-12 (-24) | 1-1/2-11-1/2 (-24) | 1-3 Days | $263.63 |
| 6401-32-32-O-SS | OneHydraulics | Stainless Steel | 2400 | 2-1/2-12 (-32) | 2-11-1/2 (-32) | 1-3 Days | $440.42 |
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Items in this collection are equivalent or similar to Series Dayco 6401, Flodar R1000, L&L SAPC-11, Lenz APN, .
Parker Tube F5F, Piper 380, Trident 1264-[R], United Tech 29, Weatherhead C3249.
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.