S-91390A689 M20 x 50 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with cup tip design that bites into surfaces for secure, vibration-resistant fastening in demanding applications
• Exceptional thread precision with Class 5g6g extra fine thread fit ensuring tight tolerances and reliable engagement in precision assemblies
• High-strength durability from alloy steel construction with Rockwell C45 hardness for excellent wear resistance and long service life
• Optimized torque transmission through 10mm hex drive design providing secure tool engagement and preventing stripping during installation
• Space-saving headless profile allowing flush mounting in confined spaces where protruding fastener heads are not feasible
• Industry-standard compliance meeting DIN 916/ISO 4029 specifications for guaranteed interchangeability and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance ensuring safe use in regulated industrial environments

Professional Applications & Engineering Value

This M20 set screw with extra fine thread pitch of 1.5mm delivers precision positioning and superior clamping force in critical industrial applications. The alloy steel construction combined with Rockwell C45 hardness provides exceptional resistance to vibration loosening and mechanical stress, making it ideal for precision machinery, automotive components, and manufacturing equipment where headless screw design is required for space-constrained assemblies. The cup tip configuration concentrates pressure on a small contact area, creating permanent seating marks that prevent rotational slippage. Engineered to DIN 916/ISO 4029 standards, this metric set screw ensures dimensional consistency and reliable performance in OEM and MRO applications requiring repeatable fastening solutions with 10mm hex drive compatibility.

Specification Summary & Compliance

This set screw features M20 x 1.5mm extra fine thread with Class 5g6g thread fit tolerance according to metric standards. Manufacturing specifications conform to DIN 916 ISO 4029 requirements for dimensional accuracy and performance. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.