Skip to the beginning of the images gallery

Brass Adapter, 1/4-18 Male NPT To 1/4-18 Male NPT, Straight Hex Nipple

Alternate Part Numbers Alternate Part Number C1HP24, Alternate Part Number MI-00333669, Alternate Part Number MINO-00925F73255	Application Grease, refrigeration, instrumentation and hydraulic systems. Fuel, LP and natural gas available on special order.	Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	End Gender 1 13554	End Gender 2 13556	End Size 1 0.25	End Size 2 0.25	End Type 1 NPTF	End Type 2 NPTF	L 1.38	Minimum Working Temperature -65	Supplier Part Number 3325X4	Thread 1 1/4-18	Thread 2 1/4-18	Thread Sealant No	Product Weight 0.02 lbs

Product Questions & Answers 3

Product Questions & Answers

got a valve with 1/4-18 female npt ports on both sides. is this the right little nipple to tie em together?

Question by: Jimmy C on Apr 10, 2025, 11:54 AM

For tying two 1/4-18 female pipe ports together, you want a straight hex nipple with 1/4-18 male NPTF threads on both ends. This adapter is exactly that, male 1/4-18 NPTF to male 1/4-18 NPTF.

Answer by: Customer Support on Apr 12, 2025, 7:37 AM

Does this nipple need any thread sealant when you're putting it in, or does it seal up on its own?

Question by: Ross B on May 19, 2025, 5:26 PM

NPTF threads are built to seal through thread-on-thread contact alone, so no sealant is required. The male NPTF ends on both sides of this adapter create a mechanical seal as they're tightened into the mating ports. That said, make sure both the adapter and the receiving fittings are clean and free of debris before you torque it down.

Answer by: Customer Support on May 21, 2025, 1:43 PM

Will this fitting hold up alright for connecting some hydraulic lines on my tractor?

Question by: Patty R on Oct 21, 2025, 6:05 AM

For hydraulic systems, this brass adapter should work just fine. It's designed to handle demanding applications within those types of systems.

Answer by: Customer Support on Oct 22, 2025, 9:26 AM

Similar Products

Model Number	Thread 1	Thread 2	L
3325X4	1/4-18	1/4-18	1.38
3325X4X2	1/4-18	1/8-27	1.19
3325X12	3/4-14	3/4-14	1.94
3325X2	1/8-27	1/8-27	0.97
3325X6	3/8-18	3/8-18	1.41
3325X6X4	3/8-18	1/4-18	1.41
3325X8	1/2-14	1/2-14	1.81