RS PRO Slot Pan Head Machine Screw, M4 Thread, 20 mm Length, A2 Stainless Steel, Slotted Drive, DIN 85, 527-050

The RS PRO 527-050 Slot Pan Head Machine Screw is designed for industrial fastening tasks where durability, corrosion resistance, and ease of installation are essential. With a standard M4 metric thread and 20 mm overall length, this machine screw delivers secure and robust performance in critical assemblies. Its slotted pan head allows for straightforward driving with a flat blade screwdriver, making it a practical choice for both manual and automated assembly operations.

Constructed from A2 grade (also known as type 304) stainless steel, this screw offers excellent resistance to corrosion and abrasion. The plain, non-plated finish ensures material purity and allows for simple cleaning and low maintenance, beneficial for installations in environments with demanding hygiene standards such as food processing, medical device assembly, and domestic appliances. The high-chromium and nickel content in A2/304 stainless steel further improves the screw's longevity and suitability for continuous exposure to moisture and temperature changes.

Conforming to DIN 85 specifications, this RS PRO screw provides consistent dimensional tolerances and reliable integration with European and international standard equipment. Its pan head design distributes clamping force reliably without damaging the surface of softer materials. The slot drive design supports legacy and modern maintenance toolchains. It is fully threaded for optimal grip in both pre-tapped holes and through-hole assemblies when paired with matching M4 threaded nuts. This flexibility makes it suitable for a broad spectrum of applications, from construction fasteners to precise electronic and instrumentation mounting.

Typical use cases include securing panels, brackets, electrical enclosures, component fixtures, and machinery guards in factories, workshops, and equipment repair lines. The material's resistance to most cleaning agents and non-salt water marine environments broadens its applicability for light commercial, industrial, and laboratory settings. For installations requiring minimal environmental impact and full recyclability, the A2 stainless steel construction is environmentally responsible.

Features offered by this machine screw include strong abrasion resistance, excellent corrosion protection, environmentally friendly recyclable stainless steel, broad temperature resistance up to 800°C, and ease of maintenance. Note that a flat head screwdriver is required for installation. Alternate variants in brass, steel, and other stainless grades are available as needed for different operating conditions.

Choose RS PRO fasteners for standard-compliant, robust solutions across manufacturing, assembly, repair, and process industries.