S-90265A351 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
• Exceptional mechanical strength with 70,000 psi tensile and 45,000 psi shear strength, providing robust performance under high-stress conditions.
• Precise component alignment enabled by the 50mm shoulder with tight diameter and length tolerances, reducing assembly errors.
• Easy installation and removal with a 6mm hex socket drive and knurled head for superior grip and torque application.
• Reliable thread engagement due to Class 5g6g thread fit and coarse M8x1.25mm pitch, ensuring quick and secure fastening.
• Enhanced durability from Rockwell B83 hardness, resisting wear and deformation in repetitive use.
• Global compliance and safety with ISO 7379 standards and RoHS/REACH environmental regulations for worry-free international procurement.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and stability challenges in precision machinery, automated assembly systems, and rotating equipment. The 50mm shoulder length with controlled tolerances acts as a precise pivot or spacer, eliminating misalignment and reducing bearing wear. Manufactured from 18-8 Stainless Steel, it offers excellent corrosion resistance for use in moist or chemically aggressive settings. The coarse metric thread (M8x1.25mm) and hex socket drive facilitate rapid installation in high-volume production, while the knurled head enhances grip during manual adjustments. Ideal for applications demanding repeated disassembly, its high tensile and shear strength ensure the screw maintains integrity under dynamic loads, providing long-term engineering value and reduced maintenance costs.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, ensuring precise and consistent thread engagement. The shoulder diameter tolerance is -0.072 to -0.01 mm and shoulder length tolerance is 0 to 0.25 mm, providing high dimensional accuracy for critical assemblies. It is manufactured in compliance with ISO 7379 for dimensional and mechanical consistency. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for global industrial use.