Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	45# Carbon Steel
Surface Finish	Black Oxide Coating
Hardness	HRC 28-32
Shaft Diameters	3/4/5/6/8/10/12 mm
Fixation Type	Set Screw
Coupling Type	Rigid Sleeve
Application	Motor Shaft Extension
Package Weight	50g (Approx)
Color	Black
Country of Origin	China

5 reviews

Anonymous

Apr 04, 2026

Rating: 5/5

Perfect fit

Ordered the 5mm coupling. Fits tightly and holds well under load.

Anonymous

Mar 08, 2026

Rating: 5/5

Exactly as described

Used for a motor shaft extension. No wobble at all.

Anonymous

Feb 24, 2026

Rating: 4/5

Good quality steel

Solid construction. One set screw was a bit tight but works fine.

Anonymous

Feb 17, 2026

Rating: 5/5

Reliable component

Great for DIY CNC projects. The black oxide prevents rust.

Anonymous

Jan 30, 2026

Rating: 3/5

Check your measurements

I ordered the wrong size initially. Product is fine, just my mistake.

5 FAQ

Q: Is this flexible enough for misalignment?

A: No, this is a rigid coupling. Shafts must be aligned precisely.

Q: Can I use this to connect two different shaft sizes?

A: Yes, select the conversion option during checkout.

Q: What is the outer diameter?

A: It varies by shaft size, please check the specific size chart.

Q: Is this suitable for high torque applications?

A: It is designed for moderate torque typical of NEMA motors.

Q: Does it come with an Allen key?

A: Yes, a small hex key is included in the package.

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