S-90909A108 M4 x 20 mm ISO 7380 Stainless Steel Flanged Button Head Hex-Drive Screws
Stainless Steel Flanged Button Head Hex-Drive 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
- Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction with passivated surface treatment
- High-strength performance with 70,000 psi tensile strength for reliable load-bearing in demanding applications
- Secure, tool-resistant fastening provided by the 2.5mm hex socket drive and flanged button head design
- Simplified installation and alignment with fully threaded M4 coarse thread (0.7mm pitch) and Class 6g tolerance
- Reduced assembly components as the integrated flange eliminates the need for separate washers
- Global compliance assurance meeting ISO 7380 standards and environmental regulations including RoHS 3 and REACH
- Consistent dimensional accuracy ensuring reliable performance and interchangeability in metric assemblies
Professional Applications & Engineering Value
This 316 stainless steel flanged button head screw delivers critical engineering advantages where corrosion resistance and structural integrity are paramount. The combination of M4 coarse threading with Class 6g tolerance ensures rapid installation and secure fastening in vibration-prone environments, while the passivated finish significantly enhances corrosion protection beyond standard stainless steel. The integrated flange distributes clamping force evenly, preventing surface damage and eliminating washer requirements in metric assembly applications. These fully threaded hex socket screws are particularly valuable in chemical processing, marine equipment, and food machinery where both corrosion resistance and frequent maintenance access are essential operational requirements.
Specification Summary & Compliance
This fastener maintains Class 6g thread fit per metric standards with M4 x 0.7mm coarse threading and 20mm length. Manufacturing conforms to ISO 7380 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications. Material certification confirms 316 stainless steel composition with passivated finish for enhanced corrosion protection.
