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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.

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.

Comparison of the Dimensions of Low Profile Screws and Small Head Screws

Comparison of the Dimensions of Low Profile Screws and Small Head Screws

This page compares the dimensions of low profile and small head screws. Easily find screws that satisfy the desired dimensions, shape and material.

About SUH660

About SUH660

SUH660 is austenitic heat-resistant steel. With high strength at high temperatures, it can be used in environments up to 700°C.

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.

General Tolerances

General Tolerances

This page describes JIS B 0405 / JIS B 0419 "General tolerances".

Hexagon Nuts

Hexagon Nuts

This page describes JIS B 1181 "Hexagon Nuts (those not dependent on ISO 4032 to 4036 and ISO 8673 to 8675)".

Key and Their Corresponding Keyways

Key and Their Corresponding Keyways

This page describes JIS B 1301 "Keys and their corresponding keyways".

Dimensions of Holes for Hexagon Socket Cap Screws

Dimensions of Holes for Hexagon Socket Cap Screws

This page describes "Dimensions of Holes for Hexagon Socket Cap Screws".

Vol.4　What are washers used for?

Vol.4　What are washers used for?

Do you know the role washers play? Preventing scratches to the seating surface?
Preventing looseness? Maybe some of you are already long-time washer users?
Today,Nedzigon will explain the role of metal washers clearly.

What is a Coupling? Explanation of Types and Features

What is a Coupling? Explanation of Types and Features

A coupling is a mechanical component used to connect a drive shaft to a driven part, such as a motor shaft and a ball screw, to transmit torque.

Galling and Seizing

Galling and Seizing

This is a phenomenon that occurs while tightening, where the surface of the screw thread melts or welds due to frictional heat and the screw stops moving. To resolve galling, NBK's special surface treatment screws, such as those with fluorine coating, are recommended.

What are Hex Nuts?

What are Hex Nuts?

Here we offer a clear introduction to hex nuts.

What makes our custom screws special

What makes our custom screws special

The machine parts manufacturer Nabeya Bi-tech Kaisha (NBK) at e-nedzi.com manufactures special screws to the customer's specifications, such as tip machining and surface treatment. Special material screws, resin screws and loosening prevention are also available.

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Have you ever been surprised by rust suddenly appearing on rust-resistant aluminum?
If this happens, the reduced strength resulting from the corrosion brings fears of possible damage.
This phenomenon is known as "galvanic corrosion". Today, I will explain this principle and how it can be handled.


Fastening Screws in Areas with Cumulative Pitch Misalignment of Large Panels

Fastening Screws in Areas with Cumulative Pitch Misalignment of Large Panels

Discover how specially processed screws solved challenges with large equipment panels!