S-91390A684 M20 x 20 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with high-strength alloy steel construction and Rockwell C45 hardness for maximum durability in demanding applications
• Precise thread engagement with extra fine M20 x 1.5mm thread pitch and Class 5g6g fit ensuring reliable, vibration-resistant fastening
• Easy installation and removal through 10mm hex drive design that provides excellent torque transmission without head protrusion
• Enhanced grip and alignment with cup tip type that creates consistent pressure points and reduces component damage
• Global compatibility meeting DIN 916/ISO 4029 standards for reliable performance in international engineering projects
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
• Space-saving design as a headless set screw ideal for applications where clearance is limited

Professional Applications & Engineering Value

This M20 extra fine thread set screw delivers exceptional engineering value in precision applications where vibration resistance and reliable positioning are critical. The alloy steel construction with Rockwell C45 hardness provides superior strength-to-weight ratio, preventing deformation under high stress conditions. The extra fine 1.5mm thread pitch offers increased thread engagement surface area, making it ideal for adjusting mechanisms, precision machinery, and applications requiring fine adjustments. The cup tip type ensures concentrated contact pressure without damaging mating surfaces, while the headless hex drive design allows installation in confined spaces. These metric set screws are particularly valuable in manufacturing equipment, automotive assemblies, and industrial machinery where Class 5g6g thread fit guarantees consistent performance and reduces the risk of loosening under dynamic loads.

Specification Summary & Compliance

This precision set screw features M20 x 1.5mm extra fine metric threads with Class 5g6g thread fit ensuring tight tolerances for superior fastening performance. Manufactured to DIN 916/ISO 4029 standards with right-hand thread direction, 20mm length, and 10mm hex drive. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries and international markets requiring strict material compliance.