Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	6061 Aluminum Alloy
Color Options	Red, Blue, Green, Black, Silver
Inner Diameter	5mm, 6mm, 8mm, 10mm
Outer Diameter	19mm
Total Length	25mm
Weight	15g per piece
Surface Treatment	Anodized
Compatibility	NEMA 17, NEMA 23 Motors
Package Includes	2 x Couplings, 4 x Set Screws
Brand	TechFit Components

5 reviews

Anonymous

Apr 19, 2026

Rating: 5/5

Great quality aluminum

Solid construction. The set screws hold tight without stripping. Highly recommend for DIY projects.

Anonymous

Apr 14, 2026

Rating: 4/5

Good but check sizing

Quality is good, but make sure you measure your shaft exactly. I ordered 8mm for a slightly worn 8mm shaft and it was tight.

Anonymous

Mar 13, 2026

Rating: 5/5

Vibrant colors

The blue color is exactly as pictured. Adds a nice touch to my RC boat setup.

Anonymous

Feb 15, 2026

Rating: 5/5

Sturdy and reliable

Been running these on my engraving machine for months without any slip or wear. Very satisfied.

Anonymous

Feb 11, 2026

Rating: 5/5

Perfect for my 3D printer

These couplings fit my NEMA 17 motor shaft perfectly. The anodized color matches my frame nicely.

5 FAQ

Q: Does the color fade over time?

A: The anodized finish is durable and resistant to fading under normal operating conditions.

Q: Will this fit a 6.35mm shaft?

A: No, this specific listing is for standard metric sizes (5mm, 6mm, 8mm, 10mm). Please check our imperial series for 6.35mm.

Q: Can I use this for high RPM applications?

A: Yes, these are balanced for rigid coupling applications up to 4000 RPM depending on shaft alignment.

Q: What is the maximum torque rating?

A: For the 8mm model, the static torque rating is approximately 15 Nm. Please consult the spec sheet for specific sizes.

Q: Are set screws included?

A: Yes, each coupling comes with two set screws suitable for the shaft size.

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