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Steel Adapter, 3/8-19 Male BSPP (British Parallel) To 3/8-18 Male NPT, Straight

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Description & Features

This steel adapter from Adaptall America offers a reliable solution for connecting differing thread types, specifically 3/8-19 Male BSPP (British Parallel) to 3/8-18 Male NPT, ensuring compatibility and durability in industrial settings.

Engineered for precision, this straight adapter supports seamless transitions between BSPP and NPT thread standards. Its robust steel construction guarantees long-lasting performance in demanding environments, free from any included thread sealant.

Main features include a 3/8-19 male BSPP thread and a 3/8-18 male NPT thread, designed to meet specific connection requirements with high precision.

Ideal for applications that require high-quality material and precise thread design, this adapter ensures a reliable and secure fit for your BSPP to pipe connections.

Catalog Number: C1FQ78

Supplier Part Number: 9007-06-06

Specifications

Brand
adapt-all
Connection Size 1
3/8 in
Connection Size 2
3/8 in
Connection Type
Male BSP, MNPT
Connection Type 1
Male BSPP
Connection Type 2
Male NPT
Dimension Standards
ANSI B1.20.3, BS 5200
Dimensions
35 mm L
Finish
Zinc-Plated
Fitting Type
Adapter
Hex Size
22 mm
Material
Steel
Material Construction
Carbon Steel
Series
9007 Series
Thread Sealant
Without Thread Sealant
Thread Size
3/8-19 x 3/8-18

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Product Questions & Answers (2)

Question by: Tommy W on Dec 4, 2025, 6:08 PM
got a hose end that’s 3/8-19 BSPP and the port on my block is 3/8-18 NPT. is this the right straight adapter to tie those together?
Answer by: Customer Support on Dec 6, 2025, 6:34 AM
For matching those exact thread callouts, it bridges a 3/8-19 male BSPP on one side to a 3/8-18 male NPT on the other, in a straight steel adapter.
Question by: Cindy W on Feb 13, 2026, 9:29 PM
Got a piece of equipment running BSPP fittings and need to tie it into a standard NPT line. This the right adapter for that?
Answer by: Customer Support on Feb 15, 2026, 4:39 PM
For exactly that kind of crossover, yes. One end is 3/8-19 Male BSPP (British Parallel) and the other is 3/8-18 Male NPT, so it bridges those two thread standards in a straight configuration. Both threads are the same nominal size, just different standards, which makes this a clean solution when you're mixing equipment that came from different origins. Keep in mind there's no thread sealant included, so you'll want to apply your own before making up the connections.

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