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Male Npt X Fixed Female Bspp

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Description & Features

Built for straight-through connections between NPT and BSPP threaded systems, this steel adapter from Adaptall bridges two common thread standards in a single compact fitting. One end features a 1-1/4" male NPTF thread (1-1/4 - 11.5), while the opposite end presents a 1-1/4" fixed female BSPP port (G 1-1/4 - 11), making it well suited for hydraulic circuits that require a reliable transition between North American and British thread standards.

The Male Npt X Fixed Female Bspp measures 56.4mm in length with a 51mm wrench width, offering a manageable footprint for installations where space is a consideration. Steel construction supports the demands of hydraulic service environments, and the straight configuration keeps routing straightforward without introducing angular offset.

SKU: 9037-20-20

Supplier Part Number (MPN): 9037-20-20

Specifications

Brand
adapt-all
Connection Size 1
1-1/4 in
Connection Size 2
1-1/4 in
Connection Type
Female BSP, MNPT
Connection Type 1
Male NPT
Connection Type 2
Female BSPP
Dimension Standards
ANSI B1.20.3, BS 5200
Dimensions
56 mm L
Finish
Zinc-Plated
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Series
9037 Series
Thread Size
1-1/4-11-1/2 x 1-1/4-11

Product Questions & Answers (3)

Question by: Peggy B on Aug 23, 2025, 2:16 PM
got a pump with 1-1/4 nptf on it and the hose end is g 1-1/4, is this the right adapter to tie those together?
Answer by: Customer Support on Aug 24, 2025, 4:01 PM
For tying those two thread standards together, it matches what you described. One side is a 1-1/4 inch male NPTF thread with a 1-1/4 - 11.5 callout, and the other side is a 1-1/4 inch fixed female BSPP port with a G 1-1/4 - 11 callout.
Question by: Harold G on Jun 19, 2025, 9:09 PM
Got a hydraulic line coming off a North American pump with NPT threads that needs to tie into a British-spec component with BSPP ports, this fitting handle that kind of crossover?
Answer by: Customer Support on Jun 21, 2025, 1:04 PM
Connecting those two thread standards is exactly what this adapter is built for. One end is 1-1/4" male NPTF (1-1/4 - 11.5) and the other is a 1-1/4" fixed female BSPP port (G 1-1/4 - 11), so it bridges that NPT-to-BSPP gap in a single fitting without needing additional hardware in between. Steel construction holds up in hydraulic service, and the straight-through design keeps your routing clean.
Question by: Brent W on Dec 8, 2025, 9:23 PM
reckon this'll hold up alright in a hydraulic setup on farm equipment, dealin' with some pretty high pressures?
Answer by: Customer Support on Dec 9, 2025, 9:46 PM
Built with steel, this adapter should handle the demands of most hydraulic systems. Just be sure your system's pressure is within the steel's rated capacity to ensure long-term reliability.

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