S-91280A804 M14 x 140 mm ISO 4014, DIN 931, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 110,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure
• Class 8.8 strength grade provides excellent load-bearing capacity for heavy-duty industrial assemblies
• Zinc plating finish offers enhanced corrosion resistance, extending service life in harsh environments
• Partially threaded design with coarse M14x2mm threads provides optimal grip and vibration resistance
• External hex drive allows for easy installation and removal with standard tools, improving assembly efficiency
• Rockwell C21 hardness maintains structural integrity under high stress conditions
• International standard compliance (ISO 4014/DIN 931) ensures consistent quality and interchangeability

Professional Applications & Engineering Value

This M14 hex head screw delivers exceptional engineering value across multiple industrial sectors. The Class 8.8 steel construction combined with zinc plating addresses critical challenges in structural applications where both mechanical strength and environmental resistance are paramount. The partially threaded configuration with coarse metric threads provides superior clamping force distribution, making it ideal for heavy machinery, construction equipment, and automotive assemblies. The external hex drive design ensures quick installation in confined spaces while maintaining high torque capability. Engineered to ISO 4014 and DIN 931 standards, this fastener offers reliable performance in applications requiring precise thread fit Class 6h tolerances and consistent mechanical properties.

Specification Summary & Compliance

This metric hex head screw features precise Class 6h thread fit tolerances and complies with ISO 4014, DIN 931, and ISO 898 manufacturing specifications. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility. With M14x2mm coarse thread spacing and 140mm length with partial threading, it maintains dimensional accuracy according to international metric thread standards for reliable performance in industrial fastening applications.