S-90269A443 M1.6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Enhanced durability and wear resistance from the black oxide finish, providing added protection against abrasion.
• Secure, non-slip fastening enabled by the knurled hex socket head, ensuring a firm grip during installation and removal.
• High mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength, suitable for demanding load-bearing applications.
• Precision thread fit (Class 5g6g) for reliable engagement and vibration resistance in assembled components.
• Accurate shoulder dimensions with controlled tolerances, providing consistent alignment and spacing in assemblies.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining alignment and resisting loosening under vibration. The 316 stainless steel material offers excellent resistance to corrosion from chemicals, moisture, and salt spray, making it suitable for medical devices, marine equipment, and food processing machinery. The black oxide finish not only enhances corrosion protection but also reduces galling and seizing. With a knurled hex socket head and 2 mm drive size, it ensures easy installation in tight spaces while the 4 mm shoulder length provides precise component spacing. Its Class 5g6g thread fit and coarse 0.35 mm pitch deliver secure fastening in high-stress applications, reducing maintenance needs and improving operational reliability.

Specification Summary & Compliance

This shoulder screw features a metric M1.6x0.35 mm thread with Class 5g6g tolerance for precision fit. The shoulder diameter is 3 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 4 mm with a tolerance of 0 to 0.25 mm. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring it is free from hazardous substances and suitable for use in regulated industrial and consumer products.