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Steel Adapter, 7/8-14 Male SAE O-Ring Boss (Straight Thread O-Ring) To 3/8-18 Male NPT, Straight

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Alternate Part Numbers
Alternate Part Number 6401-10-06, Alternate Part Number C1EN69, Alternate Part Number MI-01604060, Alternate Part Number MINO-00028Q18765
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
L
1.56
Supplier Part Number
6401-10-06-O
Thread 1
7/8-14
Thread 2
3/8-18
Thread Sealant
No
Product Weight
0.17 lbs
Product Questions & Answers 4

Product Questions & Answers

trying to swap from an ORB port over to pipe thread, is this the right adapter for that?
Question by: Steve C on Nov 3, 2025, 8:38 PM
For converting between those two thread styles, this adapter goes from a 7/8-14 Male SAE O-Ring Boss (straight thread O-ring) on one end to a 3/8-18 Male NPT on the other, in a straight configuration.
Answer by: Customer Support on Nov 5, 2025, 4:58 PM
got a hydraulic line running 3/8 NPT male on the port side and need to tie into a SAE O-Ring Boss fitting, will this adapter bridge those two without needing extra pieces?
Question by: Travis D on Feb 10, 2026, 12:37 PM
That's what this one's built for. One end is a 7/8-14 male SAE O-Ring Boss (straight thread O-Ring) and the other is 3/8-18 male NPT, so it connects those two thread standards directly, no additional fittings required. The straight thread O-Ring end handles sealing at the boss port, which keeps things tight and leak-free on that side of the connection.
Answer by: Customer Support on Feb 11, 2026, 4:42 PM
got a hose end with 7/8-14 ORB on it and i need to go into a 3/8 npt port, is this the right little adapter?
Question by: Frank H on Jul 4, 2025, 10:45 AM
For that thread match, yes. One side is 7/8-14 male SAE O-Ring Boss (straight thread O-ring) and the other side is 3/8-18 male NPT, and it is a straight adapter.
Answer by: Customer Support on Jul 6, 2025, 6:51 AM
Will this here adapter work to connect a 7/8-14 male SAE O-ring to a 3/8-18 male NPT?
Question by: Keith S on Sep 2, 2025, 2:40 PM
That's exactly what it's for. This steel adapter is made to connect a 7/8-14 male SAE O-Ring Boss to a 3/8-18 male NPT thread.
Answer by: Customer Support on Sep 4, 2025, 10:27 AM

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