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Male Bspp X Female Bspt

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Description & Features

Constructed from steel with a straight body configuration, this adapter transitions from a G 3/8-19 male BSPP thread on one end to an R 1/4-19 female BSPT thread on the other. The Male BSPP X Female Bspt is a practical solution for connecting components where these two thread standards meet within hydraulic and industrial fluid systems.

BSPP (parallel) and BSPT (tapered) threads are both widely used in industrial equipment, and bridging between them requires a dedicated adapter rather than a direct connection. The male BSPP side seals via a bonded seal or O-ring face, while the female BSPT end accepts a tapered thread for a pressure-assisted seal. Manufactured by Adaptall, this fitting is part of a broad interchangeable adapter system designed for reliable cross-standard connections.

SKU: 9034-06-04

Supplier Part Number (MPN): 9034-06-04

Specifications

Brand
adapt-all
Connection Size 1
3/8 in
Connection Size 2
1/4 in
Connection Type
Female BSP, Male BSP
Connection Type 1
Male BSPP 60 deg Flare
Connection Type 2
Female BSPT
Dimension Standards
BS 5200, DIN EN 10226-1, ISO 1179, ISO 7-1, ISO 8434-6
Finish
Zinc-Plated
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Series
9034 Series
Thread Size
1/4-19 x 3/8-19

Product Questions & Answers (3)

Question by: Howard W on Feb 26, 2026, 5:00 PM
What's the deal with BSPP and BSPT? I'm guessing they don't just screw together, huh?
Answer by: Customer Support on Feb 27, 2026, 6:18 PM
Designed to bridge exactly this kind of connection, this adapter joins a male BSPP (parallel) to a female BSPT (tapered) thread, which otherwise wouldn't directly connect. It's a common issue in hydraulic systems where different thread standards are used.
Question by: Floyd L on Nov 27, 2025, 7:55 AM
Got a piece of equipment running G 3/8 BSPP on one port and the mating component only has a 1/4 BSPT female thread. this adapter gonna bridge that gap without needing anything else in between?
Answer by: Customer Support on Nov 29, 2025, 6:23 AM
That's what this fitting is built for. One end is a G 3/8-19 male BSPP thread, and the other is an R 1/4-19 female BSPT. So if you've got a BSPP male port and need to accept a 1/4 BSPT male fitting coming in from the other side, this bridges those two standards in a single piece. The BSPP side seals with a bonded seal or O-ring face, and the BSPT female end uses thread taper to get its seal. No additional adapters needed for that specific transition.
Question by: Todd S on Mar 15, 2026, 6:02 AM
got a G 3/8-19 male port on one side and need to tie into an R 1/4-19 female BSPT, is this the right adapter?
Answer by: Customer Support on Mar 16, 2026, 8:25 PM
For bridging those two thread standards, yes. This is a straight steel adapter with a G 3/8-19 male BSPP on one end and an R 1/4-19 female BSPT on the other, made for connecting BSPP (parallel) to BSPT (tapered) in hydraulic or industrial fluid systems.

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