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Barrow THKN-3/8-V4 Compression Fitting for 10x16mm (3/8" ID x 5/8" OD) Soft Tubing, G1/4, H59 Brass
Barrow THKN-3/8-V4 Compression Fitting for 10x16mm (3/8" ID x 5/8" OD) Soft Tubing, G1/4, H59 Brass
TL;DR: The THKN-3/8-V4 is a compression fitting for 10x16mm soft tubing, which is 3/8 inch inner diameter and 5/8 inch outer diameter. It threads into any standard G1/4 port on a water block, radiator or reservoir, then clamps the tube against the barb by tightening the outer collar. The body is machined f
Common Applications
The THKN-3/8-V4 is a compression fitting for 10x16mm soft tubing, which is 3/8 inch inner diameter and 5/8 inch outer diameter. It threads into any standard G1/4 port on a water block, radiator or reservoir, then clamps the tube against the barb by tightening the outer collar. The body is machined from H59 brass and the collar is finished with a diamond-knurled texture so it can be tightened or removed by hand without slipping.
Frequently Asked Questions
Q: Which soft tubing fits this compression fitting?
A: Soft tubing with 3/8 inch inner diameter and 5/8 inch outer diameter (10x16mm).
Q: What is the body made of?
A: High-quality H59 brass.
Q: Why does the collar have a textured pattern?
A: A diamond texture is rolled onto the collar so the fitting can be tightened by hand without slipping.
Q: How many fittings come in the pack?
A: Eight fittings per pack in the kit version.







