• Knobs


Captive Knurled Knob

Knurled Knob with Captive Mechanism

Hints for Correctly Using NBK Products

The video is an example using KDMS-SC(KDMS-SC). You can perform the same operation using this product.

Dimension Drawing

KNMS-SCCaptive Knurled Knobs寸法図



M (Coarse)
Nominal of Thread

Unit : mm

Part Number D M (Coarse)
Nominal of Thread
Pitch Lm H s A d L d1 Mass
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KNMS-20-M5-16-SC 20 M5 0.8 6 11.5 7.5 4 10 16 3.9 16 9.19 CAD Cart

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Main Body SUS304


  • Captive type knurled knob. Prevents fall-off and loss of the knob.
  • Foreign matter entry countermeasures and CE marking support (⇒Captive Series).
  • Made of SUS304. For applications including food processing machinery, packaging machinery, etc., where corrosion resistance is called for.
  • A wide variety of screw sizes from M3 to M10.

Precautions for Use

Screw hole inner diameter on the cover side shall be at least d1.
The cover thickness should be 0.8mm or above.

Related Products

Steel KNM-SC with the same shape is available.

KNMS-SCCaptive Knurled Knobs

Mounting example

Make a screw hole in the cover, then pass the knob thread through it. Even when the screw is removed from the frame, the knob does not fall out from the cover because the knob thread catches on the screw hole of the cover.

KNMS-SCCaptive Knurled Knobs

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