S-99607A278 M4 x 16 mm Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Tool-free manual operation with knurled head for superior grip and quick installation/removal
- Exceptional corrosion resistance from 18-8 stainless steel construction for long service life in demanding environments
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing performance
- Secure coarse threading with Class 6g tolerance ensuring precise fit and vibration resistance in industrial applications
- Enhanced stability from flared collar design preventing over-tightening and providing superior seating
- Full environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
- Complete thread coverage along 16mm length for maximum engagement and holding power
Professional Applications & Engineering Value
This M4 thumb screw delivers critical advantages in applications requiring frequent access or tool-free adjustments. The 18-8 stainless steel construction provides excellent corrosion resistance for harsh environments including electronics enclosures, marine equipment, and food processing machinery. The knurled round head with flared collar design ensures positive grip even with gloved hands, while preventing surface damage during manual tightening. With coarse metric threading (0.7 mm pitch), installation is rapid and secure, reducing assembly time in production lines and maintenance scenarios. The fully threaded design offers consistent clamping force across the entire 16mm length, making it ideal for panel fastening, access covers, and adjustable components where reliability and quick service access are paramount.
Specification Summary & Compliance
Manufactured to precise metric standards with M4 x 0.7 mm coarse threads meeting Class 6g tolerance for consistent fit. The 18-8 stainless steel construction provides Rockwell B85 hardness and 80,000 psi tensile strength. Features 11mm knurled head diameter with 4mm height and 9mm collar diameter with 4.5mm height. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substance control.
