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Stainless Steel Adapter, 3/8-18 Male NPT To 1/8-27 Female NPT, Bushing

Alternate Part Numbers Alternate Part Number 3/8X1/8PTR, Alternate Part Number C1DJ25	Brand Ssp Fittings Corp	Brand SSP Fittings Corp	Pack Size 1.00	UOM EA	L 0.85	Supplier Part Number PTR-3/8X1/8	Thread 1 3/8-18	Thread 2 1/8-27	Thread Sealant No	Product Weight 0.99 lbs

Product Questions & Answers 1

Product Questions & Answers

got a 3/8-18 npt port but my gauge line is 1/8-27 npt. is this the right little bushing to step it down

Question by: Keith T on Nov 21, 2025, 8:16 AM

For stepping a 3/8-18 male NPT connection down to a 1/8-27 female NPT connection, this bushing is the correct thread match. It is a pipe-to-pipe adapter meant to join two different NPT sizes when you need a reduction.

Answer by: Customer Support on Nov 22, 2025, 2:01 PM

Similar Products

Model Number	Thread 1	Thread 2	L
PTR-1/2X1/4	1/2-14	1/4-18	1.09
PTR-1/2X3/8	1/2-14	3/8-18	1.1
PTR-1/4X1/8	1/4-18	1/8-27	0.85
PTR-1X3/4	1-11-1/2	1-11-1/2	1.36
PTR-3/4X1/2	3/4-14	1/2-14	1.17
PTR-3/4X3/8	3/4-14	3/8-18	1.17
PTR-3/8X1/4	3/8-18	1/4-18	0.85
PTR-3/8X1/8	3/8-18	1/8-27	0.85