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Steel Adapter, 3/4-16 Male SAE O-Ring Boss (Straight Thread O-Ring) To 1/4-18 Male NPT, Straight

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Alternate Part Numbers
Alternate Part Number 6401-08-04, Alternate Part Number C1EK76, Alternate Part Number FMC3647011, Alternate Part Number MI-01604058, Alternate Part Number MINO-00028Q18763
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
L
1.24
Supplier Part Number
6401-08-04-O
Thread 1
3/4-16
Thread 2
1/4-18
Thread Sealant
No
Product Weight
0.11 lbs
Product Questions & Answers 2

Product Questions & Answers

Got a port on my hydraulic manifold threaded 3/4-16 ORB and need to tie into a 1/4 NPT line coming off a small gauge. This the right adapter to make that happen?
Question by: Joyce M on Jul 11, 2025, 9:57 PM
Right fit for that setup. One end is 3/4-16 male SAE O-ring boss, the other is 1/4-18 male NPT, and the overall length is 1.24 inches. The O-ring boss end seals at the port face with an O-ring rather than relying on thread engagement alone, so you get a solid leak-resistant connection on the manifold side. Just make sure your gauge port is a female NPT to receive that 1/4-18 male end.
Answer by: Customer Support on Jul 13, 2025, 11:35 AM
Will this fitting hold up okay for hydraulic fluid?
Question by: Rick D on Jun 24, 2025, 11:47 AM
Absolutely, this steel adapter is designed for industrial applications, providing secure, leak-proof connections in hydraulic setups.
Answer by: Customer Support on Jun 26, 2025, 11:37 AM

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