S-97505A138 M8 DIN 923 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance – Zinc plating protects against rust and wear in demanding industrial environments, extending service life.
• High Tensile Strength for Demanding Applications – Alloy steel construction provides 58,000 psi tensile strength, ensuring reliable performance under high stress.
• Precision Shoulder for Accurate Alignment – 8mm shoulder length with tight tolerances (±0.07mm to 0.15mm) enables exact component positioning and reduces assembly errors.
• Space-Saving Low Profile Socket Head – Compact head design allows installation in confined spaces while providing secure slotted drive engagement.
• Consistent Thread Performance – M8x1.25 coarse threads with Class 6g fit ensure easy assembly, vibration resistance, and secure fastening in various materials.
• Compliance with International Standards – DIN 923 specification guarantees dimensional accuracy and interchangeability for global engineering projects.
• Environmental & Safety Compliance – Meets RoHS 3 and REACH regulations, making it suitable for regulated industries and export markets.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and space constraints in precision machinery, automation systems, and fixture design. The alloy steel core, hardened to Rockwell B71, withstands repetitive loads and shocks, while the zinc plated finish resists corrosion in humid or chemically exposed settings. The low profile socket head and 8mm shoulder with controlled tolerances eliminate the need for separate spacers or bushings, reducing parts count and assembly time. Ideal for securing rotating components, guiding linear motion, or acting as a pivot shaft, this metric shoulder screw ensures minimal backlash and maintains precise concentricity in industrial applications like CNC equipment, robotic arms, and packaging machinery.

Specification Summary & Compliance

This shoulder screw adheres to DIN 923 standards, with an M8x1.25 coarse metric thread and Class 6g thread fit for consistent engagement. The shoulder diameter (10mm) and length (8mm) maintain tight tolerances (e.g., shoulder diameter: -0.036mm to 0mm) to ensure precise fits. Manufacturing and material specifications meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for use in regulated environments without hazardous substances.