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About Couplings

About Couplings

Coupling is a component used to connect a drive shaft and a driven part, for example, a motor shaft and a ball screw for the purpose of transmitting the torque.

Couplings Bore and Keyway Additional Modification Service

Couplings Bore and Keyway Additional Modification Service

For customers who want to eliminate the operation of machining the couplings bore.

Coupling bores and keyways can be additionally modified

Captive Processing Service

Captive Processing Service

For customers who want to prevent screws from falling off

We can add relief-cut treatment to screws to prevent them from falling off.

Cleanroom Wash / Cleanroom Packing Service

Cleanroom Wash / Cleanroom Packing Service

For customers who want to remove impurities and dust from the surface of products

We will cleanroom wash and cleanroom pack products as desired.

Screw Length Adjustment Service

Screw Length Adjustment Service

For customers who require screws of non-standard lengths

We can cut screws to your preferred length in 1 mm increments.

Screw combination service

Screw combination service

For customers who want to change the threaded portion of a lever or knob

Have your chosen screw delivered attached to a lever/knob female screw product!

Handle Shaft Hole Processing Service

Handle Shaft Hole Processing Service

For customers who want a handle with a shaft hole

We will deliver the handle product after processing the shaft hole and set screw hole.

Scale Plate・Scale Sticker Cutting Service

Scale Plate・Scale Sticker Cutting Service

For customers who require scales of customized length

We can cut scales to your preferred length.

Coupling Stainless Steel Screw Alteration Service

Coupling Stainless Steel Screw Alteration Service

For customers who want to prevent the coupling screws from rusting

Change the screws supplied with the coupling to stainless steel.

Laser engraving service

Laser engraving service

For customers who want to engrave operation procedures or marks on handles or levers，etc

Various marks and letters are laser-engraved on NBK products. 

What are Hex Socket Head Cap Screws (cap bolts)?

What are Hex Socket Head Cap Screws (cap bolts)?

Hex Socket Head Cap Screws (cap bolts) are bolts (screws) with hexagon-shaped holes in their heads. It lists product descriptions for hex socket head cap screws, recommended products, etc.

Solving common issues with Food Machinery（Food Packaging Machine）

Solving common issues with Food Machinery（Food Packaging Machine）

Introducing the safety and hygiene countermeasures essential for food packaging machinery design.

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

Introducing components with a captive mechanism.

Select the best screws for your needs

Select the best screws for your needs

This page helps to select a Product based on application needs. Vacuum, Low Outgas, Clean, Chemical Resistance, High Strength, Heat Resistance, etc

Use the NBK Captive Screw Series to be comply with CE

Use the NBK Captive Screw Series to be comply with CE

This is the page for captive screws. Screws that secure a protective cover or inspection cover of equipment and devices must not fall out of the cover when it is removed. Use NBK's captive screw series to comply with CE marking.

No. 8: Preventing Part Fall-out

No. 8: Preventing Part Fall-out

Are you struggling with screw or washer fall-out during equipment assembly or maintenance?
Here we introduce products that can be used to prevent part fall-out.