S-91319A216 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant secure fastening with integrated nylon pellet thread locker that maintains integrity across a wide temperature range from -50° to 250°F
• Superior load-bearing capacity with 150,000 psi tensile strength and 84,000 psi minimum shear strength for demanding industrial applications
• Precision dimensional control with Class 5g6g thread fit and tight shoulder diameter tolerance (-0.049 to -0.01 mm) ensuring consistent assembly performance
• Enhanced corrosion resistance through black oxide finish that protects against oxidation in harsh operating environments
• Optimized installation efficiency with hex socket drive (5mm) and knurled head texture for secure tool grip during tightening
• Reliable mechanical properties from alloy steel construction with Rockwell C32 hardness for long-term durability
• Global compliance assurance meeting ISO 7379 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This M8 shoulder screw delivers critical engineering solutions for precision machinery and industrial equipment where vibration resistance and positional accuracy are paramount. The alloy steel construction with black oxide finish provides exceptional strength while resisting corrosion in demanding environments. The integrated nylon pellet locking technology prevents loosening under dynamic loads, making it ideal for rotating assemblies, automation systems, and precision fixturing applications. The precisely machined shoulder diameter (10mm) and 12mm shoulder length maintain component alignment while the coarse M8x1.25mm thread ensures rapid assembly. These metric shoulder screws are engineered to solve common industrial challenges including misalignment, vibration-induced failure, and corrosion degradation.

Specification Summary & Compliance

This precision shoulder screw features Class 5g6g thread fit with shoulder diameter tolerance of -0.049 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm. Manufactured to ISO 7379 specifications, the fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The metric thread system with coarse pitch (1.25mm) and standard shoulder fit ensures compatibility with industrial equipment requiring precise dimensional control and reliable performance.