S-91273A299 M3 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
- Precise component alignment enabled by the 4mm shoulder with tight diameter tolerance (-0.04 to -0.01mm)
- High-strength fastening with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Consistent thread engagement through Class 5g6g thread fit and M3 x 0.5mm coarse pitch design
- Secure installation and removal with 2mm hex socket drive and knurled head for improved grip
- Enhanced durability with Rockwell B55 hardness for wear resistance in repetitive assembly operations
- Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements
Professional Applications & Engineering Value
These precision shoulder screws deliver exceptional value in applications requiring exact component positioning and reliable fastening. The M3 x 0.5mm coarse thread configuration combined with Class 5g6g thread fit ensures consistent engagement in automated assembly systems, while the 4mm shoulder length with tight diameter tolerances provides accurate alignment for rotating components in machinery, electronics, and precision instruments. Manufactured from 18-8 stainless steel, these socket head shoulder screws maintain integrity in corrosive environments, and the knurled head texture with 2mm hex drive facilitates secure installation in space-constrained applications where vibration resistance is critical.
Specification Summary & Compliance
This metric shoulder screw features M3 x 0.5mm coarse threads with Class 5g6g thread fit per ISO standards, ensuring precise dimensional accuracy. The shoulder maintains diameter tolerance of -0.04 to -0.01mm and length tolerance of 0 to 0.25mm for consistent performance. Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, these screws are suitable for global industrial applications demanding environmental responsibility and technical precision.
