S-93140A250 M4 x 12 mm ASME B18.6.7M Plastic Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Optical clarity and chemical resistance from clear polycarbonate material for applications requiring visibility and durability against environmental factors.
• Precise flush mounting with standard 90° countersink angle and flat head design, ensuring secure, unobtrusive fastening in assembled components.
• Reliable thread engagement with Class 6g thread fit and coarse pitch (0.7mm), providing strong hold and easy installation in various materials.
• Broad thermal stability across -40° to 210° F, maintaining integrity in fluctuating temperature environments common in industrial settings.
• Full-threaded design for maximum grip along the entire 12mm length, enhancing pull-out resistance in plastic or soft substrates.
• Slotted drive compatibility with standard tools, offering straightforward manual installation and removal without specialized equipment.
• Compliance with major standards including ASME B18.6.7M, RoHS 3, and REACH, ensuring safety and regulatory acceptance for global industrial use.

Professional Applications & Engineering Value

These M4 metric flat head screws are engineered from polycarbonate plastic to address critical needs in electronics, medical devices, and transparent assemblies where metal fasteners are unsuitable. The clear transparency allows for internal inspection or aesthetic alignment, while the material's inherent impact resistance and electrical insulation properties prevent short circuits and corrosion. With a fully threaded metric thread and Class 6g thread fit, they deliver consistent clamping force and vibration resistance in plastic housings or delicate components. The standard 90° countersink angle ensures a seamless finish, reducing stress concentrations. Ideal for industrial plastic fasteners in regulated sectors, these screws support efficient assembly and long-term reliability without compromising compliance.

Specification Summary & Compliance

This screw features a metric thread size M4 with 0.7mm coarse pitch and Class 6g thread fit per ISO standards, ensuring dimensional accuracy. It is manufactured in compliance with ASME B18.6.7M for mechanical fasteners, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming it is free of hazardous substances for safe industrial use.