S-90278A549 M3 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise component alignment thanks to the 25mm shoulder with tight tolerances for minimal play
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing
- Secure and efficient installation using the standard 2mm hex socket drive, preventing cam-out
- Consistent and reliable threading with Class 6g fit and coarse M3 x 0.5mm metric thread for easy assembly
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe global use
- Durable, smooth head finish reduces friction and wear during repeated use
Professional Applications & Engineering Value
This M3 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, extending service life in demanding conditions. The 25mm shoulder length with precise fit tolerance ensures accurate positioning of moving parts, such as in machinery, gears, and pivoting assemblies, reducing vibration and misalignment. The hex socket drive allows for high-torque installation in confined spaces, while the Class 6g thread fit and coarse thread spacing facilitate quick, secure fastening. Ideal for precision equipment, automation systems, and assembly jigs, this screw delivers reliable performance where exact tolerances and corrosion-resistant properties are paramount.
Specification Summary & Compliance
This metric shoulder screw features a 4mm thread length with M3 x 0.5mm coarse thread spacing and Class 6g thread fit per ISO standards. The shoulder diameter is 4mm with a tolerance of -0.025 to 0 mm, and shoulder length is 25mm with a tolerance of 0 to 0.05 mm for precise fit. Manufactured from 18-8 stainless steel with a tensile strength of 70,000 psi and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.
