The Steel Adapter 7/8-14 Male SAE O-Ring Boss (Straight Thread O-Ring) To 3/4-14 Male NPT Straight is engineered to connect various threaded components in hydraulic and industrial applications. Manufactured by Brennan Industries Inc this adapter ensures a precise and secure fit enhancing the integrity of your threading systems.
This adapter features a 7/8-14 Male SAE O-Ring Boss (Straight Thread O-Ring) to 3/4-14 Male NPT connection providing reliable performance without internal thread sealant. It is designed to meet rigorous industry standards ensuring dependable functionality under demanding conditions.
The robust steel construction of this adapter assures durability and long-term usage. Ideal for applications requiring a transition from an SAE O-Ring Boss to an NPT thread format it supports seamless integration into existing setups.
MPN: 6401-10-12-O
Supplier Part Number: 6401-10-12-O
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Specifications
Alternate Part Numbers
Alternate Part Number6401-10-12, Alternate Part Number C1EK79, Alternate Part Number MI-00328004, Alternate Part Number MINO-00028F68728
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
L
1.77
Supplier Part Number
6401-10-12-O
Thread 1
7/8-14
Thread 2
3/4-14
Thread Sealant
No
Product Weight
0.26 lbs
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Product Questions & Answers (2)
Question by: Bobby W on Jul 31, 2025, 10:35 AM
Will this here fitting work to go from a SAE O-ring to a pipe thread?
Answer by: Customer Support on Aug 2, 2025, 7:33 AM
This adapter is indeed designed to transition between a 7/8-14 Male SAE O-Ring Boss and a 3/4-14 Male NPT thread.
Question by: Peggy E on Sep 13, 2025, 5:04 PM
got a port on my hydraulic manifold that's SAE O-Ring Boss and the line coming off it is NPT, will this adapter make that connection work straight off, or do I need something else in between?
Answer by: Customer Support on Sep 15, 2025, 12:04 PM
That's exactly what this adapter handles. One end is 7/8-14 Male SAE O-Ring Boss and the other is 3/4-14 Male NPT, so it bridges those two thread formats in a single fitting with no extra pieces needed. The ORB end seals with an O-ring rather than thread sealant, which keeps that side of the connection clean and reliable. As long as your port accepts a 7/8-14 male ORB and your NPT line is 3/4-14, you're good to go.
