S-91210A115 M4 x 12 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with a 90° cone point that bites into materials for vibration-resistant, permanent fastening
• Exceptional durability and wear resistance provided by Alloy Steel heat-treated to a Rockwell C45 hardness
• Reliable, coarse-pitch threading (M4 x 0.7mm) ensures quick and easy installation with a secure, deep-grip hold
• Precise Class 5g6g thread fit guarantees consistent performance and interchangeability in demanding assemblies
• Compact, headless design with a 2mm hex drive allows for flush mounting in confined spaces where a protruding head is not feasible
• Full compliance with DIN 914 and ISO 4027 standards ensures dimensional accuracy and global engineering acceptance
• Safe for use in regulated industries as it is RoHS 3 and REACH compliant, meeting strict environmental and safety directives

Professional Applications & Engineering Value

This M4 set screw is engineered to solve critical challenges in precision assembly and machinery. The alloy steel construction, hardened to Rockwell C45, provides the necessary strength to resist shear forces and loosening under load. Its defining 90° cone point concentrates pressure to create a permanent, secure lock on shafts, gears, and collars, preventing axial movement in high-vibration environments. The headless design and compact 2mm hex drive make it ideal for applications where space is limited and a smooth, flush surface is required. As a metric set screw with a coarse thread, it offers fast installation and robust holding power, making it a reliable industrial fastener for automation equipment, precision tools, and mechanical drives.

Specification Summary & Compliance

This set screw conforms to the dimensional and mechanical specifications of DIN 914 and ISO 4027. The metric thread is manufactured to a Class 5g6g tolerance, ensuring precision fit and reliable performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free of restricted hazardous substances and safe for use in various industrial and consumer products.