S-91287A428 M20 x 80 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 environments and long-term reliability
• High tensile strength of 100,000 psi ensures secure, durable fastening in demanding industrial applications
• Coarse 2.5mm pitch threading provides faster installation and reduced risk of cross-threading
• External hex drive design allows for easy, high-torque installation using standard tools
• Class 6g thread fit guarantees precise, consistent engagement and reliable performance
• Partial threading offers optimal grip and clamping force for a wide range of material thicknesses
• Compliance with ISO 4014/DIN 931 standards ensures interchangeability and global engineering acceptance

Professional Applications & Engineering Value

This M20 hex head screw delivers exceptional engineering value in industrial settings where corrosion resistance and mechanical strength are critical. Manufactured from 18-8 stainless steel, it effectively resists rust and chemical degradation, solving common failure points in outdoor, marine, or chemical processing equipment. The coarse metric thread with 2.5mm pitch enables quicker assembly and superior performance in softer materials or where vibration resistance is needed. With its external hex drive and 80mm length, it provides reliable fastening for structural frameworks, machinery assembly, and heavy-duty applications, ensuring long-term operational integrity and reduced maintenance cycles.

Specification Summary & Compliance

This screw features M20 x 2.5mm coarse threading with Class 6g thread fit per ISO metric standards, ensuring dimensional accuracy and compatibility. It is manufactured in compliance with ISO 4014 / DIN 931 specifications for hex head bolts. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.