S-90269A638 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments including marine and chemical processing.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi minimum shear strength for reliable performance under high stress.
• Precise alignment and pivot function enabled by the 20mm shoulder with controlled diameter and length tolerances for smooth assembly.
• Secure, non-slip fastening thanks to the knurled socket head and 4mm hex drive, allowing for high torque application without stripping.
• Accurate and durable thread engagement with Class 5g6g metric coarse thread (M5x0.8mm), ensuring consistent fit and reduced cross-threading risk.
• Enhanced wear resistance and low visibility from the black oxide finish, which also provides mild corrosion protection.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for use in regulated industries.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and rotational needs in precision assemblies. The 316 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for demanding applications in industrial machinery, automotive systems, and marine equipment. The black oxide finish not only enhances durability but also reduces light reflection, which is beneficial in optical or sensitive devices. The knurled socket head with a 4mm hex drive ensures a firm grip, minimizing slippage during installation in tight spaces. With a Class 5g6g thread fit and coarse 0.8mm pitch, it offers quick assembly and disassembly, reducing labor time in production lines. The precisely machined shoulder acts as a spacer or pivot, maintaining component alignment and reducing wear on moving parts, thereby extending the lifespan of the overall assembly.

Specification Summary & Compliance

This shoulder screw features a metric M5x0.8mm coarse thread with Class 5g6g thread fit for standard tolerance. The shoulder diameter is 8mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 20mm with a tolerance of 0 to 0.25 mm, ensuring precise dimensional control. It is manufactured from 316 stainless steel with a black oxide finish and meets industry standards for hardness (Rockwell B79). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated applications.