S-91385A204 M2.5 x 4 mm DIN 916, ISO 4029 Set Screws
Set 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
- Vibration-resistant locking with nylon patch thread locker maintains secure fastening in dynamic environments from -50° to 250°F
- Exceptional durability through Rockwell C45 hardness black-oxide alloy steel construction resisting wear and corrosion
- Precise thread engagement with Class 5g6g metric coarse threads ensuring reliable installation and load distribution
- Space-saving design as a headless set screw with hex drive for applications with limited clearance
- Enhanced grip from the cup tip design providing superior biting action into contact surfaces
- Global compliance meeting DIN 916/ISO 4029 standards plus RoHS 3 and REACH environmental regulations
- Optimized drive performance using 1.3mm hex drive for secure tool engagement during installation
Professional Applications & Engineering Value
This M2.5 set screw delivers critical engineering solutions for industrial applications requiring reliable, vibration-resistant fastening. The black-oxide alloy steel construction combined with Rockwell C45 hardness provides exceptional resistance to wear and environmental degradation, while the nylon patch thread locker effectively prevents loosening under continuous vibration and thermal cycling from -50° to 250°F. The headless hex drive design with cup tip enables flush mounting in confined spaces while maximizing clamping force. These metric set screws are engineered for precision machinery, automotive components, and electronic enclosures where coarse thread spacing ensures rapid assembly and dependable performance in high-stress applications.
Specification Summary & Compliance
This set screw maintains Class 5g6g thread fit tolerance according to metric standards, with M2.5 x 0.45mm pitch coarse threads and right-hand thread direction. Manufacturing complies with DIN 916/ISO 4029 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.
