M16x1.5mm Retaining Four-Slot Slotted Round Nuts, 2 Pcs

Description

Product Overview

The OEM M16x1.5mm retaining four‑slot slotted round nuts are crafted from high‑grade hardened steel, delivering exceptional tensile strength and resistance to wear in demanding environments. Each nut features a precise four‑slot geometry that allows for easy alignment with corresponding pins or keys, ensuring a secure fit that prevents rotation under load. The round body provides a uniform bearing surface, distributing stress evenly across the shaft and reducing the risk of localized fatigue. With a tolerance of ±0.02 mm, these nuts maintain consistent thread engagement, which is critical for applications where vibration and dynamic forces are common. The two‑piece packaging offers a ready‑to‑use solution for maintenance technicians, engineers, and hobbyists who need reliable fasteners without the hassle of searching for matching components. Designed to meet ISO 4032 standards, the nuts are compatible with a wide range of standard M16x1.5mm bolts and shafts, making them a versatile choice for machinery, automotive assemblies, and custom equipment builds. Their compact size enables installation in confined spaces where larger fasteners would be impractical, while the four‑slot design simplifies the insertion of keys or pins during assembly or disassembly.

Usage

These retaining nuts excel in a variety of industrial and mechanical settings. In manufacturing equipment, they are commonly used to lock pulleys, gears, and couplings to rotating shafts, preventing slippage during high‑speed operation. Automotive repair shops rely on them for securing transmission components, engine accessories, and drivetrain parts where precise alignment and durability are essential. For DIY enthusiasts, the nuts are ideal for building custom rigs, robotics projects, and hobbyist machinery that demand reliable fastening without the need for specialized tools. The four‑slot design allows for quick key insertion, which is especially useful in applications where frequent removal and re‑installation are required, such as test rigs or prototype assemblies. Additionally, the hardened steel construction ensures that the nuts can withstand exposure to oil, coolant, and other harsh chemicals often encountered in automotive and industrial environments. When used in conjunction with matching bolts, the nuts provide a robust, vibration‑resistant connection that helps extend the service life of the overall system.

Why Choose Us

Choosing our OEM retaining nuts means selecting a product backed by rigorous quality control and a commitment to customer satisfaction. Each batch undergoes heat treatment and surface inspection to guarantee uniform hardness and free‑from defects such as cracks or inclusions. Our manufacturing process adheres to ISO 9001 standards, ensuring that every nut meets exact dimensional tolerances and performance criteria. We source steel from reputable suppliers who provide traceable material certifications, giving you confidence in the material’s origin and consistency. Beyond the product itself, we offer responsive technical support to assist with fitment questions, installation guidance, and troubleshooting. Our after‑sales service includes a straightforward return policy and the option to receive replacement parts quickly should any issues arise. By partnering with us, you benefit from a reliable supply chain, competitive pricing, and the peace of mind that comes from working with a trusted supplier dedicated to engineering excellence.

Key Features

• High‑grade hardened steel construction provides superior strength and long‑term durability in demanding applications.
• Four‑slot design enables easy key insertion and secure alignment, reducing assembly time and improving reliability.
• Precise M16x1.5mm thread dimensions ensure consistent fit with standard bolts and shafts, minimizing the risk of thread damage.
• Compact round shape distributes load evenly, preventing stress concentrations and extending component lifespan.
• Comprehensive technical support and hassle‑free replacement service give you confidence throughout the product lifecycle.

FAQ

What materials are these retaining nuts made from?

These nuts are manufactured from high‑quality hardened steel that meets ISO 4032 specifications. The steel is heat‑treated to achieve a hardness level that resists wear, deformation, and corrosion, making it suitable for both industrial and automotive environments where durability is critical.

Can these nuts be used with non‑standard shafts or bolts?

While the nuts are designed for the standard M16x1.5mm thread pitch, they can be paired with compatible custom shafts or bolts that share the same thread dimensions. It is important to verify the shaft diameter and keyway size to ensure proper engagement and avoid misalignment.

How do I install the four‑slot key?

To install the key, align the four‑slot opening on the nut with the corresponding keyway on the shaft. Insert the key gently until it seats fully, then rotate the nut to lock it in place. The slot geometry provides a clear guide, allowing for quick and accurate placement without the need for specialized tools.

What is the recommended torque setting for these nuts?

For optimal performance, we recommend tightening the nut to a torque of 30–35 Nm (Newton‑meters). This range ensures sufficient clamping force while preventing over‑tightening, which could damage the threads or the shaft. Always use a calibrated torque wrench to achieve consistent results.

Do you offer bulk pricing or custom packaging?

Yes, we provide volume discounts for larger orders and can accommodate custom packaging requirements to suit your inventory or shipping needs. Contact our sales team with your projected quantity, and we will work with you to develop a pricing structure and packaging solution that aligns with your operational goals.