S-91287A156 M8 x 40 mm ISO 4014, DIN 931 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 100,000 psi ensures reliable performance in demanding applications
• Precise Class 6g thread fit guarantees smooth assembly and secure fastening with minimal play
• External hex drive design provides excellent torque transmission and easy installation with standard tools
• Partially threaded shank allows for controlled clamping force and reduced thread galling
• Compliance with ISO 4014/DIN 931 standards ensures consistent quality and international interchangeability
• RoHS 3 and REACH compliant meeting strict environmental regulations for safe usage

Professional Applications & Engineering Value

This M8 hex head screw delivers exceptional engineering value in industrial applications where corrosion resistance and mechanical strength are critical. The 18-8 stainless steel material prevents rust and degradation in humid or chemically aggressive environments, while the coarse thread with 1.25 mm pitch enables quick assembly and superior vibration resistance. The partially threaded design concentrates clamping force precisely where needed, reducing stress concentrations and preventing joint loosening. With its external hex drive and 40 mm length, it provides reliable fastening in machinery, structural frameworks, and heavy-duty equipment requiring metric coarse thread solutions that maintain integrity under continuous load.

Specification Summary & Compliance

Manufactured to ISO 4014/DIN 931 specifications with Class 6g thread fit tolerance for precise engagement. The screw features M8 x 1.25 mm coarse thread with right-hand threading and a minimum thread length of 22 mm. Compliance includes RoHS 3 (2015/863/EU) with applicable exemptions and full adherence to REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability.