The Steel Adapter, 7/8-14 Male SAE O-Ring Boss (Straight Thread O-Ring) To 3/8-18 Male NPT, Straight from Brennan Industries Inc, is designed for high-performance industrial applications. Engineered for precise connections, this adapter features a 7/8-14 male SAE O-Ring Boss on one end and a 3/8-18 male NPT thread on the other, ensuring compatibility with various threading standards.
Fabricated from premium steel, this adapter excels in durability and resilience, making it suitable for demanding environments. The straight thread O-Ring configuration facilitates leak-proof connections, which is critical in maintaining system integrity and performance.
Given its robust construction and compatibility, this adapter is a crucial component in numerous industrial systems. The #10 MORB X #6 MP designation further attests to its versatile application range, catering to diverse threading requirements.
MPN: C1EN69
Supplier Part Number: 6401-10-06-O
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Specifications
Alternate Part Numbers
Alternate Part Number6401-10-06, 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
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Product Questions & Answers (4)
Question by: Steve C on Nov 3, 2025, 8:38 PM
trying to swap from an ORB port over to pipe thread, is this the right adapter for that?
Answer by: Customer Support on Nov 5, 2025, 4:58 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.
Question by: Travis D on Feb 10, 2026, 12:37 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?
Answer by: Customer Support on Feb 11, 2026, 4:42 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.
Question by: Frank H on Jul 4, 2025, 10:45 AM
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?
Answer by: Customer Support on Jul 6, 2025, 6:51 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.
Question by: Keith S on Sep 2, 2025, 2:40 PM
Will this here adapter work to connect a 7/8-14 male SAE O-ring to a 3/8-18 male NPT?
Answer by: Customer Support on Sep 4, 2025, 10:27 AM
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.
