Stainless Steel A2-70 Hexagon Drive Pan Head Screws for Wear-Resistant Fastening

These stainless steel screws are designed as a practical fastening component for applications where both mechanical strength and resistance to environmental factors are needed. The specified A2-70 grade indicates a stainless steel alloy with defined tensile strength, making it suitable for general-purpose use in atmospheres prone to mild corrosion. The 16mm by 5.7mm size provides a specific dimensional solution for projects requiring a fastener of this exact length and diameter, from light mechanical assembly to certain construction tasks. The whitewash finish applied to the surface adds a layer of protection, aimed at improving the screw's longevity in conditions that might cause wear or surface degradation.

Features and Construction

This screw's design combines several specific features that determine its function and appropriate use cases. The construction centres on the material grade and the precise dimensional specifications provided.

Material and Build

The screw is made from Stainless Steel A2-70. This designation refers to a specific group of austenitic stainless steels, with the '70' indicating a minimum tensile strength of 700 N/mm². This grade is known for offering good corrosion resistance in many atmospheric conditions, though it is not typically recommended for continuous immersion in saltwater or highly aggressive chemical environments. The material choice directly supports the stated application of 'wear resistance', as the inherent hardness and corrosion resistance of A2-70 steel can help maintain thread integrity and appearance over time compared to non-stainless alternatives.

Size and Practical Fit

The screw dimensions are clearly stated as 16mm in length and 5.7mm in diameter. This diameter likely corresponds to a standard metric size, such as M5 or M6, though the exact thread pitch is not specified. The 16mm length indicates it is intended for securing materials with a combined thickness that, when clamped, suits this screw's grip range. The half round head (or pan head) profile is a common design that provides a bearing surface for the screw head to press against the workpiece, while the integrated hexagon socket (hex drive) in the head allows for installation with a hex key or Allen wrench, offering good torque transfer and a lower profile compared to external drive types like hex bolts.

Uses and Placement

The product information highlights 'wear resistance' as a key application. This suggests suitability for scenarios where the fastener might be subject to friction, vibration, or exposure that could degrade a less durable material.

Event or Professional Use

In professional or trade settings, these screws could be used in light machinery assembly, fixture installation, or fabricating structures where stainless steel is specified for hygiene, corrosion, or aesthetic reasons. The A2-70 grade and whitewash finish make them a candidate for indoor equipment, outdoor fixtures in sheltered locations, or applications in food preparation areas where non-corrosive materials are preferred. The hex drive is favoured in many trades for its reliability and the availability of tools.

Everyday Home Use

For DIY enthusiasts, these screws are applicable for projects like building shelving, assembling furniture, repairing appliances, or creating outdoor structures like planters or small sheds where increased weather resistance is beneficial. The specific 16mm length is useful when the material thickness is known, helping to achieve a secure fit without a screw that is too short or unnecessarily long.

Benefits and Buying Value

The value of this product lies in its defined specifications, which allow for informed selection for a particular task, and the material properties that may reduce future maintenance.

Reuse and Low Maintenance

The corrosion-resistant nature of stainless steel A2-70 means that, in suitable environments, these screws are less likely to rust or seize in place compared to carbon steel screws. This can make disassembly and potential reuse easier if required. The whitewash finish may further slow surface tarnishing, keeping a cleaner appearance for longer with minimal upkeep.

Why Choose This Product

You would select this specific screw if your project requires a fastener with a 16mm length, a 5.7mm diameter, and the material benefits of stainless steel A2-70. The combination of the hex drive for secure installation, the pan head for load distribution, and the protective finish makes it a focused choice for applications where standard zinc-plated steel screws might not offer sufficient longevity or where material specifications call for stainless steel.