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Male Npt X Fixed Female Bspp

Description & Features

Constructed from steel in a straight configuration, this Adaptall adapter provides a reliable threaded connection between a 3/8" Male NPT (NPTF) port and a 1/4" Fixed Female BSPP port. It bridges two of the most common thread standards used in hydraulic and industrial fluid systems, making it a practical solution when equipment with G 1/4-19 BSPP ports must interface with 3/8-18 NPTF connections.

The Male NPT X Fixed Female BSPP measures 35.2mm in length with a 22mm CH width, fitting standard wrench engagement for straightforward installation. The fixed female BSPP end uses a parallel thread form sealed by a bonded seal or face seal method, while the male NPTF side relies on tapered thread engagement for a pressure-tight connection. Steel construction provides durability suitable for demanding hydraulic circuit applications.

SKU: 9037-06-04

Supplier Part Number (MPN): 9037-06-04

Specifications

CH Width 22mm	L Length 35.2mm	Adaptall Material Steel	Adaptall Shape Straight	Side 1 Callout 3/8 - 18 NPTF	Side 1 Gender M	Side 1 Size 3/8"	Side 1 Type Npt	Side 2 Callout G 1/4 - 19	Side 2 Gender F	Side 2 Size 1/4"	Side 2 Type Bspp	Brand Adaptall America	Brand Adaptall	Pack Size 1.00	UOM EA	Supplier Part Number 9037-06-04	Product Weight 0.15 lbs

Product Questions & Answers (3)

Question by: Cheryl W on Dec 21, 2025, 9:45 PM

Got a piece of equipment with a G 1/4-19 BSPP port on it and need to tie into a 3/8-18 NPTF line. this adapter handle that crossover?

Answer by: Customer Support on Dec 23, 2025, 4:01 PM

That's exactly what this fitting is built for. One end is a 3/8-18 NPTF male thread that engages by taper for a pressure-tight seal, and the other end is a G 1/4-19 fixed female BSPP port that seals via a bonded seal or face seal method. Steel construction, straight configuration, 35.2mm long with a 22mm wrench flat. It connects those two thread standards directly without needing additional adapters in between.

Question by: Denise T on Jun 17, 2025, 7:41 AM

What size wrench do I need to tighten this adapter down good and snug?

Answer by: Customer Support on Jun 18, 2025, 9:53 PM

This adapter is made with a 22mm CH width, so a standard 22mm wrench should work just fine for installation.

Question by: Scott Y on Jan 14, 2026, 2:28 PM

i've got a G 1/4-19 bsp port on a valve block and my hose end is 3/8-18 nptf. is this the right adapter to tie those together?

Answer by: Customer Support on Jan 15, 2026, 7:06 PM

For that mix of threads, yes. This adapter is made to connect a 3/8-18 NPTF male end to a G 1/4-19 BSPP fixed female end, so it bridges those two common standards in hydraulic and industrial fluid setups.