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Removing stripped screws 【Workability / maintenance】

Removing stripped screws 【Workability / maintenance】

Introducing a product with excellent workability that can remove damaged screws.

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.


Vol. 10 Stress Corrosion Cracking: corrosion that attacks corrosion-resistant stainless steel!

Vol. 10 Stress Corrosion Cracking: corrosion that attacks corrosion-resistant stainless steel!

This is a description of "stress corrosion cracking", a problem that frequently occurs but is difficult to detect. I, Nedzigon will discuss the causes, mechanism, and countermeasures, as well as screws that are resistant to stress corrosion cracking.

Vol. 9　Sudden Bolt "Delayed Fracture"

Vol. 9　Sudden Bolt "Delayed Fracture"

The phenomenon in which a bolt that has been fastened for some time suddenly breaks is called delayed fracture. This can cause a lot of hassle, as the exterior shows no deformation and yet the bolts suddenly break. Why does delayed fracture occur? Under what conditions does it occur? How can we prevent it? Nedzigon makes it all clear to you.

Vol. 8　Why a Cross recess gets broken: What is "cam-out"?

Vol. 8　Why a Cross recess gets broken: What is "cam-out"?

Have you experienced "stripping" of a screw, where its cross recess reams out and prevents you from removing the screw? No one enjoys struggling to remove screws with pliers, right? Today, I will explain what "cam-out" is and how it causes cross recess to "strip."

Vol.7　Screw Tightening Control Methods

Vol.7　Screw Tightening Control Methods

Although fastening objects using the axial force generated from tightening is the main role of screws (bolts), in actual work, I think there are many people who control the torque by tightening with a torque wrench, because it is difficult to directly monitor the axial force, and so guarantee the axial force that way. However, there are other methods of control for tightening screws (bolts). These include those with only slightly greater axial force variation than with a torque wrench. Today, Nedzigon will tell you all about them.

Vol.5　Varieties of SUS Screws

Vol.5　Varieties of SUS Screws

Even though we call them "stainless steel screws", there are actually a variety of types of steel. Typical steels for stainless steel screws include SUS304 and SUSXM7, but there are also other stainless steel screws that have properties beyond resistance to rust.
Today, Nedzigon would like to introduce you to the main stainless steels used for screws.
You might find just the right stainless steel screw to solve the problems you're facing now.

Vol.3　Functional Screw Surface Treatments Are Not Just for Corrosion Resistance

Vol.3　Functional Screw Surface Treatments Are Not Just for Corrosion Resistance

While ferrosoferric oxide film (black oxide finishing) and Unichrome come to mind as screw surface treatments for corrosion resistance, other surface treatments for screws provide other characteristics.
Today, Nedzigon is here to talk about these functional screw surface treatments.

Vol.1　Thinking about "Galling and Seizing"

Vol.1　Thinking about "Galling and Seizing"

Seized screws that won't come out are no small matter to deal with.Why does a screw "seize"? How can we prevent Galling and Seizing ?What exactly is Galling and Seizing? Nedzigon makes it all clear to you!

The ‘XG’ high-gain rubber coupling series is ideal for AOI/SPI productivity improvement!

The ‘XG’ high-gain rubber coupling series is ideal for AOI/SPI productivity improvement!

Here is a discussion of how the XG Series can improve AOI/SPI productivity. Here we introduce the optimum couplings for AOI and SPI.

Turn Commercially Available Nuts into "Hex Lock Nuts" with Eccentric Lock Washers™

Turn Commercially Available Nuts into "Hex Lock Nuts" with Eccentric Lock Washers™

Turns commercially available nuts to "Anti-loosening nuts". Eccentric Lock Washers TM

Anti-removal measures for interlock devices

Anti-removal measures for interlock devices

According to the ISO 14119 revision (2013), measures are now required to prevent the dismantling, removal, or disabling of interlock devices. Among these measures, the use of a special screw which can only turn in one direction is recommended.

Select Based on Application

Select Based on Application

Select Coupling based on application

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.