S-91287A111 M4 x 8 mm ISO 4017, DIN 933 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• High tensile strength of 100,000 psi provides dependable load-bearing capacity for demanding industrial applications.
• External hex drive design allows for easy installation and high torque application with standard tools.
• Fully threaded right-hand coarse pitch enables faster assembly and secure fastening in a wide range of materials.
• Precise Class 6g thread fit ensures consistent, vibration-resistant connections and reduces the risk of cross-threading.
• Compliance with ISO 4017/DIN 933 standards guarantees dimensional accuracy and interchangeability for global projects.
• RoHS 3 and REACH compliance meets stringent environmental regulations, making them suitable for regulated industries.

Professional Applications & Engineering Value

Engineered for reliability, these M4 hex head screws are crafted from 18-8 stainless steel, offering excellent resistance to rust and corrosion in demanding environments like outdoor equipment, marine applications, and chemical processing plants. The fully threaded coarse pitch design (0.7 mm) ensures rapid installation and strong holding power in soft materials or where vibration is a concern. With an external hex drive, they facilitate high-torque tightening without slippage, reducing assembly time and improving workplace efficiency. Ideal for machinery, automotive sub-assemblies, and structural frameworks, these metric coarse thread screws deliver consistent performance under stress, backed by a 100,000 psi tensile strength that prevents failure in critical joints.

Specification Summary & Compliance

This screw features a Class 6g thread fit per ISO metric standards, ensuring precise dimensional accuracy for reliable fastening. It is manufactured in compliance with ISO 4017 / DIN 933 specifications for hex head screws, guaranteeing consistent quality and interchangeability. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming it is free from hazardous substances and suitable for use in regulated industries worldwide.