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Male Bspt X Female Npt

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Description & Features

This straight Adaptall fitting connects male BSPT and female NPT threads. Constructed of steel, this fitting adapts a 1-1/4" male BSPT (R 1-1/4 - 11) connection to a 1" female NPT (1 - 11.5 NPTF) connection.

The Male Bspt X Female Npt adapter is suitable for various hydraulic applications.

SKU: 9042-20-16

Supplier Part Number (MPN): 9042-20-16

Specifications

Brand
adapt-all
Connection Size 1
1-1/4 in
Connection Size 2
1 in
Connection Type
FNPT, Male BSP
Connection Type 1
Male BSPT
Connection Type 2
Female NPT
Dimension Standards
ANSI B1.20.3, DIN EN 10226-1
Dimensions
39 mm L
Finish
Zinc-Plated
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Series
9042 Series
Thread Size
1-11 x 1-1/4-11-1/2

Product Questions & Answers (2)

Question by: Travis S on Mar 7, 2026, 4:05 PM
i've got a hose end that’s R 1-1/4 11 BSPT on the outside, will this adapter let me hook into a 1 inch female NPT port?
Answer by: Customer Support on Mar 9, 2026, 6:52 AM
It bridges those exact thread types and sizes, with a 1-1/4 inch male BSPT (R 1-1/4 - 11) on one side and a 1 inch female NPTF (1 - 11.5) on the other.
Question by: Glen R on Oct 2, 2025, 6:25 AM
Got a line running 1-1/4 inch BSPT male out of a component and need to tie into a 1 inch NPT female port. This fitting work for that?
Answer by: Customer Support on Oct 3, 2025, 9:57 PM
That's what this adapter is built for. One end is 1-1/4 inch male BSPT, threaded at R 1-1/4 - 11, and the other end is 1 inch female NPT at 1 - 11.5 NPTF. Straight configuration, no bends or offsets, so it drops right in between those two connections without any fuss.

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