S-90323A455 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish for long-term reliability in harsh environments
• Precise component alignment through controlled shoulder diameter tolerance (-0.025 to 0 mm) ensuring accurate positioning in assemblies
• High-strength performance delivering 80,000 psi tensile strength and Rockwell B95 hardness for demanding mechanical applications
• Reliable thread engagement with Class 6g thread fit providing consistent fastening performance in metric assemblies
• Space-saving low-profile design featuring socket head with hex drive for installations with limited clearance
• Optimized weight distribution through 30mm shoulder length providing stable bearing surface for rotating components
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

This precision shoulder screw delivers exceptional engineering value in applications requiring exact component positioning and rotational stability. The 18-8 stainless steel construction with passivated finish provides superior corrosion resistance, making it ideal for machinery, automation systems, and precision instruments exposed to moisture or chemicals. The M4 x 0.7mm coarse thread with Class 6g thread fit ensures reliable fastening in metric assemblies, while the precisely controlled shoulder diameter tolerance (-0.025 to 0 mm) eliminates play in bearing applications. The 30mm shoulder length serves as an accurate datum for rotating components, preventing misalignment in pivoting mechanisms. The low-profile socket head with hex drive allows for compact installations where space constraints exist, maintaining structural integrity with 80,000 psi tensile strength for heavy-duty applications.

Specification Summary & Compliance

This metric shoulder screw features M4 x 0.7mm coarse right-hand threads with Class 6g thread fit per ISO standards. The precision shoulder maintains -0.025 to 0 mm diameter tolerance and 0 to 0.05 mm length tolerance for exacting applications. Manufactured from 18-8 stainless steel with passivated finish, it delivers Rockwell B95 hardness and 80,000 psi tensile strength. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring responsible manufacturing practices and material safety.