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Stainless Mbspp X Fnpt

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Description & Features

Constructed from stainless steel, this straight adapter connects a male BSPP thread on one end to a female NPT thread on the other, making it a reliable solution for joining hydraulic lines across two common thread standards. The male side features a G 3/8-19 BSPP thread, while the female side accepts a 3/8-18 NPTF connection, both at 3/8" size, keeping the transition straightforward and flow-path consistent.

The Stainless MBSPP x FNPT adapter from Adaptall measures 34.9mm in overall length with a 22mm wrench flat width, fitting standard tooling without modification. Stainless steel construction makes it well-suited for use in corrosive or washdown environments where carbon steel hardware would be unsuitable. The straight body profile keeps installation compact where space is a consideration.

SKU: SS9035-06-06

Supplier Part Number (MPN): SS9035-06-06

Specifications

Brand
adapt-all
Connection Size 1
3/8 in
Connection Size 2
3/8 in
Connection Type
FNPT, Male BSP
Connection Type 1
Male BSPP 60 deg Flare
Connection Type 2
Female NPT
Dimension Standards
ANSI B1.20.3, BS 5200
Dimensions
34.9 mm L
Fitting Type
Adapter
Hex Size
22 mm
Material
Stainless Steel
Material Construction
316 Stainless Steel
Series
SS9035 Series
Thread Size
3/8-19 x 3/8-18

Product Questions & Answers (3)

Question by: Steve A on Sep 3, 2025, 1:50 PM
Will this here fitting work to join up stainless lines with different thread types?
Answer by: Customer Support on Sep 4, 2025, 4:55 PM
This straight adapter is indeed made for connecting stainless lines that use a male BSPP thread on one side and a female NPT thread on the other.
Question by: Neil P on Feb 22, 2026, 11:05 AM
got a G 3/8-19 bspP male on one hose and need to hook into a 3/8-18 NPTF female port. is this the right adapter?
Answer by: Customer Support on Feb 23, 2026, 1:14 PM
For that thread changeover, it matches what you described. One end is a G 3/8-19 BSPP male and the other end is a 3/8-18 NPTF female, both in 3/8 inch size, so it’s made to bridge those two standards in a straight adapter.
Question by: Cheryl H on Aug 31, 2025, 9:42 PM
Got a piece of equipment running BSPP fittings and need to tie it into some NPT hydraulic connections on our end. This the right adapter for that kind of crossover?
Answer by: Customer Support on Sep 2, 2025, 4:37 PM
For a 3/8" BSPP male to 3/8" NPT female connection, yeah, that's exactly what this one does. The male side is a G 3/8-19 BSPP thread and the female end accepts a 3/8-18 NPTF connection. Straight body, no bends or offsets, so it keeps the transition clean and the flow path consistent between the two thread standards.

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