S-91800A056 M1 x 4 mm DIN 84, ISO 1207 Stainless Steel Cheese Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under load
• Precise thread engagement with Class 6g thread fit and coarse 0.25mm pitch ensuring secure fastening in demanding applications
• Optimized head design featuring a narrow cheese head profile and slotted drive for efficient installation in confined spaces
• Full threading coverage along the 4mm length provides maximum grip and uniform stress distribution
• International standard compliance with DIN 84/ISO 1207 specifications guarantees interchangeability and quality assurance
• Environmental responsibility through RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This M1 metric screw with 0.25mm coarse pitch and rounded cheese head design addresses critical engineering challenges in precision assemblies. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to oxidation and chemical exposure, making it ideal for electronics, medical devices, and instrumentation where corrosion protection is paramount. The fully threaded configuration and Class 6g thread fit ensure consistent clamping force across the entire 4mm length, preventing loosening in high-vibration environments. The narrow head profile and slotted drive facilitate installation in space-constrained applications while maintaining sufficient torque transmission. These features make it particularly valuable for precision engineering applications requiring reliable fastening solutions with strict dimensional tolerances and environmental compliance.

Specification Summary & Compliance

This precision fastener features Class 6g thread tolerance with M1 x 0.25mm coarse thread specification and 4mm length. Manufacturing conforms to DIN 84 and ISO 1207 standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest requirements for hazardous substance restrictions.