RS PRO Countersunk Pozidriv Machine Screw Stainless Steel A4 316 Marine Grade 20 mm M6 158-3742

RS PRO 158-3742 Countersunk Pozidriv Machine Screw is made of premium A4 316 marine grade stainless steel, measuring 20 mm in length with an M6 metric thread, designed for robust fastening applications. Its countersunk flat head ensures a flush finish with surfaces, while the Pozidriv recess offers improved screwdriver grip and prevents ejection force during tightening or loosening.

Manufactured to DIN 965 standards, this machine screw features excellent corrosion resistance, especially against chlorides, making it perfectly suited for marine environments and harsh chemical plants. The A4 grade stainless steel delivers durability alongside high resistance to temperature extremes.

Machine screws like this are engineered to be used in pre-drilled, pre-tapped holes to create strong, precise joints, commonly used in industrial machinery, vehicle engines, and equipment assembly. Their full thread along the straight shank ensures secure and stable fastening when used with appropriate nuts.

The countersunk head design allows the screw to sit flush or below the material surface, which is ideal for applications requiring smooth finishes or for covering heads with screw caps. The Pozidriv head type, with its cross recess and additional indentations, enhances contact with the screwdriver, reducing wear and improving torque transfer.

This RS PRO stainless steel machine screw is suited for numerous applications including swimming pools, chemical plants, boat deck fittings, dairy equipment, medical sterilising apparatus, and sewage treatment plants where resistance to corrosion and temperature extremes is critical.

Flat countersunk head for flush mounting. Pozidriv drive type for enhanced grip and torque transfer. Constructed from marine grade A4 316 stainless steel for superior corrosion resistance. Meets DIN 965 standards for machine screws.

Ideal for industrial, marine, chemical, medical, and agricultural equipment use. Full thread along the shaft for secure fastening in pre-tapped holes. Resistant to chloride corrosion and temperature extremes. Explore EnvMart’s extensive range of industrial fasteners for high-quality and reliable Machine Screws tailored to your applications.