Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	45# Carbon Steel
Surface Treatment	Black Oxide Coating
Coupling Type	Rigid Sleeve
Shaft Diameter Range	3mm to 12mm
Adapter Configuration	Step-Up/Step-Down
Fixing Method	Set Screws
Hardness Rating	HRC 28-32
Precision Tolerance	H7/g6
Application	Motor to Shaft Connection
Package Contents	1 x Coupling, 2 x Set Screws

5 reviews

Anonymous

Apr 14, 2026

Rating: 4/5

Works Well

Holds torque without slipping under moderate load conditions.

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect Adapter

Successfully joined 5mm and 8mm shafts without any wobble.

Anonymous

Feb 22, 2026

Rating: 5/5

Fast Shipping

Arrived earlier than expected and was well packaged.

Anonymous

Feb 10, 2026

Rating: 4/5

Good Fit

Slightly tight on the 12mm side but manageable with light sanding.

Anonymous

Feb 02, 2026

Rating: 5/5

Great Quality

Solid steel construction. Works perfectly for my CNC spindle extension.

5 FAQ

Q: Are set screws included in the package?

A: Yes, two set screws are included with every coupling unit.

Q: Will this fit a Nema 17 motor shaft?

A: It depends on the shaft diameter. Please check your motor shaft size against our 3mm to 12mm options.

Q: What is the return policy for this item?

A: You may return the item within 30 days if it remains unused and in original packaging.

Q: Is this made of stainless steel?

A: No, this product is manufactured from 45# carbon steel with a black oxide finish.

Q: What is the maximum torque rating?

A: Torque capacity depends on the specific size selected, but it is suitable for moderate load applications.

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