What the 35673 Adapter Is
The 35673 is a straight thread adapter with 1/8 BSPT male on one end and 1/8 NPT female on the other. It bridges British-taper and American-taper threaded components inside a central lubrication system. This adapter carries no metering function; it only joins threaded ports.
Listed Dimensions and Variants
Listed dimensions for the 35673 are about 21 mm overall length and about 14 mm across the hex flats. The 35673-2 is the larger sibling with 1/2 BSPT male and 1/2 NPT female ends. The 19833 is a different family that shares a similar thread description in some listings but is not interchangeable with the 35673.
BSPT Versus NPT Thread Forms
BSPT and NPT use different thread forms and pitch, so they do not seal properly when screwed directly together. The 35673 exists specifically to provide a correct transition between these two tapered thread standards. Using the adapter avoids cross-threading and leakage at the junction.
Material and Pressure Honesty
One reseller lists steel while others list brass; the conflict is unresolved in public listings. This site does not assert a material for the 35673. No published pressure rating exists for this adapter, and the working pressure of the assembled joint is limited by the lowest-rated component in the line. Confirm the material during quotation; contact the quotation team.
Sealing Practice
Use an anaerobic thread sealant or minimal PTFE tape on the tapered threads of the 35673. Excess tape can shred and migrate into metering units or injectors downstream. The goal is a clean seal without loose debris entering the lubrication line.
Ordering Cautions
Order by part number, not by thread description alone, because the 19833 shares a similar description but is a different family. For related straight adapters, see the page on straight connectors. Secure adjacent line runs with tube clips where needed.
Frequently Asked Questions
What thread sizes does the 35673 adapter convert?
It converts 1/8 BSPT male to 1/8 NPT female. The adapter bridges the two different tapered thread standards without forcing them together.
Does the 35673 adapter have a metering function?
No, this adapter only joins threaded ports in a central lubrication system. It carries no metering or flow control function of its own.
Is the 35673-2 a direct replacement for the 35673?
No, the 35673-2 has 1/2 BSPT male and 1/2 NPT female ends. The larger thread size makes it a different part for larger ports.
Can I use the 19833 instead of the 35673?
No, the 19833 shares a similar thread description but is a different family. Always order by part number, not by thread text alone.
What material is the 35673 adapter made from?
Public listings conflict, with one reseller listing steel and others listing brass. Confirm the material on the quotation before you order.
What is the published pressure rating for this adapter?
No published pressure rating exists for the 35673 adapter. The assembled joint is limited by the lowest-rated component in the line.
Why does the adapter exist instead of screwing BSPT and NPT directly together?
BSPT and NPT have different thread forms and pitch, so they do not seal correctly when mated directly. The adapter provides a proper male-to-female connection between the two standards.
What sealant should I use on the tapered threads?
Use an anaerobic thread sealant or minimal PTFE tape on the tapered threads. Excess tape can shred and migrate into metering units or injectors downstream.
How long is the 35673 adapter and what is the hex width?
The adapter is about 21 mm overall length and about 14 mm across the hex flats. These listed dimensions help with fitting clearance checks.
Who builds and supports these adapters?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
For a quotation on the 35673 adapter, contact the quotation team. Bijur Delimon is a trademark of its respective owner. This page covers aftermarket adapters, not manufactured, sponsored, or endorsed by Bijur Delimon. 35673, 35673-2, and 19833 are Bijur Delimon designations shown for cross-reference identification only.
