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Product Introduction

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.

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.

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.

All you need to know about the roles and types of washers!

All you need to know about the roles and types of washers!

This page introduces washers. As well as a description of washers, the washer products handled by NBK are introduced.

What are Captive Screws? Introduction of the NBK Captive Series

What are Captive Screws? Introduction of the NBK Captive Series

NBK has standardized products for fall prevention of parts in the knob, pull and e-nedzi.com (special screw) categories. Use NBK's Captive Series for food machinery, packaging machinery and chemical manufacturing equipment that require CE Marking compatibility and measures against contamination.

Small Diameter Screws: M0.6 (S0.6) to M2.6 Lineup

Small Diameter Screws: M0.6 (S0.6) to M2.6 Lineup

NBK offers a wide-ranging lineup of small-diameter screws in various shapes and materials.
Various head diameters and heights are available for the same screw diameters, contributing to saving space.

What are low profile screws? Find advantages, disadvantages, and usage examples explained here!

What are low profile screws? Find advantages, disadvantages, and usage examples explained here!

Here we introduce advantages, usage examples, lineups and the like regarding screws with lower head height than ordinary screws, referred to as "low profile screws" or "low profile cap screws" (low head, slim head).