S-90265A127 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically exposed industrial environments.
• Superior mechanical strength offering 70,000 PSI tensile and 35,000 PSI shear strength for reliable performance under high stress.
• Precise thread engagement with Class 5g6g fit ensuring consistent assembly and reduced risk of cross-threading.
• Secure and easy installation via the knurled hex socket head, providing excellent grip and torque transmission with standard 2.5 mm drivers.
• Accurate shoulder positioning with controlled diameter and length tolerances for precise component alignment in assemblies.
• Durable material hardness rated at Rockwell B55, maintaining thread integrity and wear resistance over repeated use.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and fastening challenges in precision machinery, automation systems, and electronic enclosures. The 18-8 stainless steel material provides excellent resistance to oxidation and corrosion, extending service life in demanding conditions. With a Class 5g6g thread fit and coarse metric thread (M4 x 0.7mm), it ensures quick, secure assembly while minimizing the risk of stripping. The knurled hex socket head enhances grip during installation, reducing slippage and improving torque efficiency. Ideal for applications requiring exact shoulder length and diameter control, this screw supports precise bearing mounts, pivots, and rotating components, delivering reliable performance in high-stress industrial environments.

Specification Summary & Compliance

This shoulder screw adheres to metric coarse thread standards with M4 x 0.7mm dimensions and Class 5g6g thread fit for consistent precision. Shoulder diameter tolerance is maintained between -0.072 to -0.01 mm, and shoulder length tolerance from 0 to 0.25 mm, ensuring accurate component alignment. Manufactured from 18-8 stainless steel with a hardness of Rockwell B55, it meets mechanical requirements including 70,000 PSI tensile strength and 35,000 PSI minimum shear strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible usage.