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Brass Female Bsp Coupling

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Description & Features

This Adaptall straight coupling is made from brass and features female BSPP connections on both ends. Side 1 has a G 1/4 - 19 callout with a 1/4" size, while Side 2 has a G 1/8 - 28 callout with a 1/8" size. Use this Brass Female BSP Coupling to connect fluid lines with different sized BSPP threads.

The Adaptall Ch Width is 17, and the Adaptall L Length is 19.1.

SKU: 8043-04-02

Supplier Part Number (MPN): 8043-04-02

Specifications

Connection Size 1
1/4 in
Connection Size 2
1/8 in
Connection Type
Female BSP
Connection Type 1
Female BSP
Connection Type 2
Female BSP
Dimension Standards
BS 5200
Dimensions
19 mm L
Finish
Nickel-Plated
Fitting Type
Adapter
Hex Size
17 mm
Material
Brass
Material Construction
Brass
Series
8043 Series
Thread Size
1/4-19 x 1/8-28

Product Questions & Answers (3)

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Question by: Shane R on Oct 5, 2025, 6:55 AM
Got a 1/4" BSPP line that needs to step down to a 1/8" BSPP port, this fitting handle that?
Answer by: Customer Support on Oct 6, 2025, 7:10 PM
That's what it's built for. One end is G 1/4-19 and the other is G 1/8-28, both female BSPP, so it bridges those two thread sizes in a straight shot. Brass construction, compact at 19.1mm in length, and it'll give you a wrench flat of 17 for tightening it down without fighting it.
Question by: Glen S on Aug 25, 2025, 8:17 AM
Will this fitting work to connect a 1/4" BSPP fitting to a 1/8" BSPP fitting?
Answer by: Customer Support on Aug 27, 2025, 6:24 AM
This Adaptall coupling is designed to connect fluid lines that have different sized BSPP threads, 1/4" and 1/8".
Question by: Frank L on May 25, 2025, 4:02 PM
trying to hook a 1/4 BSPP line to a 1/8 BSPP port, is this the right little straight adapter?
Answer by: Customer Support on May 26, 2025, 6:50 PM
For stepping between those two BSPP sizes, it fits that job. Side 1 is a female G 1/4-19 and Side 2 is a female G 1/8-28, both BSPP, in a straight brass coupling.

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