A Buyer’s Guide to KATO Threaded Inserts

Fasteners are used across a wide range of aerospace and industrial applications to form secure joints that are capable of withstanding routine vibration, thermal cycling, and long operating lifecycles. To meet these performance requirements, KATO Fastening Systems manufactures threaded inserts that are designed to reinforce tapped holes in assemblies where the parent material alone may not provide adequate thread strength. In this guide, we will walk buyers through how KATO threaded inserts are specified by material, surface treatment, and dye identification conventions, that way procurement teams can better assess suitability before selection.

Why Do Many Professionals Use KATO CoilThread Inserts Over Other Industrial Fasteners?

Among KATO’s offerings, CoilThread inserts represent one of the company’s most widely used designs, particularly in aerospace and high-performance industrial assemblies. Featuring a continuous, helically coiled wire with a diamond-shaped cross section, KATO Coil Thread inserts effectively engage the parent material while accommodating a standard male fastener, eliminating the need for the thicker wall sections often required by alternative insert designs. Furthermore, because each coil flexes independently under load, CoilThread inserts have the ability to distribute applied forces evenly, reducing localized stress concentrations and delivering reliable, high-strength performance in flange areas.

What Are Common Insert Materials for KATO Threaded Inserts?

KATO Fastening Systems offers threaded inserts in multiple material options to support different environmental conditions, load profiles, and service requirements.

• 304 Stainless Steel: Often positioned as a general-purpose option, KATO threaded inserts manufactured from 304 stainless steel have the capacity to provide a balanced combination of mechanical strength and corrosion resistance.
•  Inconel X-750: Commonly used in gas turbines, KATO threaded inserts produced from Inconel X-750 are capable of maintaining structural integrity at sustained temperatures up to approximately 1,000°F.
•  Phosphor Bronze: Frequently selected for marine applications, KATO threaded inserts made from phosphor bronze offer strong corrosion resistance along with low magnetic permeability.
• Nitronic 60®: Routinely used to reduce galling and fretting when paired with stainless steel fasteners, KATO threaded inserts manufactured from Nitronic 60® are ideal for assemblies that undergo repeated installation and removal cycles.
• Nimonic 90: Regularly used in high-temperature aerospace applications exposed to extreme heat and pressure, KATO threaded inserts made from Nimonic 90 can provide exceptional stress-rupture strength performance.

What Are Go-To Platings and Coatings for KATO Threaded Inserts?

To meet a wide variety of requirements, KATO threaded inserts are offered with several plating and coating options, including:

•  Dry Film Lubricant: Inserts finished with a dry film lubricant typically add molybdenum disulfide (MoS2), which works in combination with the surface treatment to minimize the risk of galling.
•  Cadmium: Inserts with cadmium plating are often chosen to improve corrosion resistance capabilities while also reducing the risk of thread seizure between mating parts.
•  Xylan: Inserts coated with Xylan offer excellent lubricity capabilities, effectively reducing installation torque across a wide range of demanding applications.
• Silver: In applications involving elevated temperatures, KATO threaded Inserts with silver plating are often employed, as this finish can maintain functional performance at temperatures approaching approximately 1,400°F (760°C).
•  Electroless Nickel: Inserts finished with electroless nickel plating can provide effective corrosion protection and surface hardness across many complex thread geometries.

What Should Buyers Know About Dye Identification on CoilThread Inserts?

To support accurate ordering and part handling, buyers should be familiar with how dye identification is applied to KATO CoilThread inserts.

•  Red Dye Identification: Non-plated locking Tangless and tanged KATO CoilThread inserts are typically dyed red in accordance with standard identification practices, providing a consistent visual cue that does not alter mechanical properties.
• Green or Blue Dye Options: Green or blue dye variants are noted within KATO’s part numbering system by a corresponding “G” or “B” suffix, which buyers can reference at the time of order placement to ensure alignment with procurement needs.
• Removability Consideration: Dye colors on KATO Fastening Systems thread inserts are applied using standard printer’s ink and can be readily removed using a conventional cleaning solution if desired.

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