S-91067A128 M4 x 5 mm DIN 551, ISO 4766 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Excellent holding power and vibration resistance provided by the M4 coarse thread (0.7mm pitch) and Class 6g fit for secure fastening.
• Space-saving headless design allows for flush mounting in applications where protruding fasteners are not feasible.
• Simple and reliable installation with the slotted drive, compatible with standard screwdrivers for easy assembly.
• Precise alignment and minimal component damage due to the flat tip design, ideal for positioning and securing parts.
• Guaranteed dimensional consistency and interchangeability through compliance with DIN 551 / ISO 4766 metric standards.
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting strict industry regulations.

Professional Applications & Engineering Value

This M4 set screw is engineered to address common industrial challenges such as component slippage, corrosion-induced failure, and space constraints. Manufactured from 18-8 stainless steel, it provides exceptional resistance to rust and oxidation, making it suitable for demanding environments like machinery, automotive assemblies, and outdoor equipment. The headless, slotted design with a flat tip ensures a flush fit, preventing interference in compact mechanisms while applying even pressure to secure parts without marring surfaces. Its metric coarse thread (0.7mm pitch) and Class 6g thread fit deliver robust clamping force and vibration resistance, reducing the need for frequent retightening. Ideal for precision set screw applications in shafts, collars, and gears, this fastener enhances assembly integrity and longevity, streamlining maintenance and improving overall system performance.

Specification Summary & Compliance

This set screw features an M4 x 0.7mm coarse metric thread with a Class 6g tolerance for precise fit, a 5mm length, and a flat tip. It is manufactured in accordance with DIN 551 (equivalent to ISO 4766) standards, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its safety and sustainability for industrial use.