S-91979A703 M4 x 6 mm Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Secure and flush mounting thanks to the headless design, ideal for applications requiring minimal protrusion
• High-torque installation capability enabled by the 2 mm hex drive, preventing tool slippage and damage
• Reliable thread engagement with a coarse 0.7 mm pitch and Class 6g fit, ensuring consistent clamping force
• Effective pressure equalization via the 1.2 mm vent diameter, preventing pressure buildup in sealed assemblies
• Enhanced component protection from the cup tip, which minimizes surface damage on contacted parts
• Guaranteed environmental and safety compliance with RoHS 3 and REACH regulations for global market suitability

Professional Applications & Engineering Value

This M4 hex headless set screw is engineered to solve critical challenges in precision assembly and machinery. Manufactured from 18-8 stainless steel, it offers excellent resistance to rust and corrosion, making it ideal for use in moist or chemically aggressive industrial settings. The vented design is particularly valuable in applications involving shafts, collars, or pulleys, where it allows for pressure release, reducing the risk of component seizure and simplifying maintenance. The combination of a Class 6g thread fit and coarse thread pitch ensures rapid installation and a secure, vibration-resistant hold, which is crucial in dynamic systems like motor assemblies and precision instruments. Its headless, right-hand thread and cup tip provide a flush finish and concentrated point contact, protecting expensive components from damage while maintaining alignment in tight spaces.

Specification Summary & Compliance

This set screw adheres to metric (M4 x 0.7mm) threading standards with a Class 6g thread fit for precise dimensional accuracy. It is manufactured to meet industry specifications for headless, hex drive set screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated markets and sensitive applications.