A4 Stainless Steel Flat Head Socket Screws DIN 7991 / ISO 10642, M5 x 16 mm, 500 Pack

Description

• Maximum corrosion protection: Made from acid-resistant A4 (V4A) stainless steel; suitable for saltwater, pool chlorine, and aggressive chemical environments.
• Flush finish: The 90 countersunk head fully recesses into the material for a smooth, level surface.
• Precise hex socket: Allen-drive socket enables efficient torque transfer and helps prevent tool slippage.
• Standards-compliant quality: Meets DIN 7991 requirements and corresponds to ISO 10642, with a precise metric thread.
• Ideal for marine applications: Suitable for yacht building, pool surrounds, dock structures, and coastal projects.

A4 (V4A) stainless steel countersunk socket screw according to DIN 7991 / ISO 10642. Designed for smooth, level surfaces, this screw allows the head to sit flush with the material when a countersink is prepared in the workpiece. The high-quality A4 stainless steel combines a clean appearance with high corrosion resistance. Drive: Hex socket (Allen) for secure torque transfer and easy installation. Head type: Countersunk head for a flush finish; countersinking in the workpiece is required. Material: A4 (V4A) stainless steel, acid-resistant and suitable for saltwater. Standard: Corresponds to ISO 10642, formerly DIN 7991. Compared with A2 stainless steel, A4 is intended for more demanding environments, including coastal areas, chlorinated pool atmospheres, boatbuilding, and chemical-industry applications. Its molybdenum alloy helps protect against pitting and chemical degradation.

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