S-91280A044 M4 x 16 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head 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 tensile strength with Class 8.8 steel construction providing 110,000 psi capability for reliable load-bearing performance
- Superior corrosion resistance through black oxide coating that protects against rust in demanding industrial environments
- Optimized thread engagement with coarse 0.7mm pitch and Class 6g fit ensuring secure fastening and vibration resistance
- Maximum thread utilization through fully threaded design for consistent clamping force along the entire 16mm length
- Efficient installation and removal with external hex drive and 7mm head width allowing standard tools for quick assembly
- Proven durability with Rockwell C21 hardness maintaining structural integrity under repeated stress
- Global compliance assurance meeting ISO 4017 standards while being RoHS 3 and REACH compliant for international projects
Professional Applications & Engineering Value
These M4 hex head screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The Class 8.8 steel construction provides exceptional mechanical properties for machinery assembly, automotive components, and industrial equipment where vibration resistance is essential. The coarse thread metric design with 0.7mm pitch ensures rapid installation and superior holding power in various materials, while the black oxide surface treatment offers enhanced corrosion protection for extended service life in challenging environments. As fully threaded screws with precise 6g thread fit, they maintain consistent clamping force across the entire 16mm length, making them ideal for applications requiring uniform pressure distribution and reliable mechanical connections in manufacturing and maintenance operations.
Specification Summary & Compliance
This metric hex screw features M4 x 0.7mm thread specifications with Class 6g tolerance for precision fit. Manufactured to ISO 4017 standards (equivalent to DIN 933) with right-hand threading and fully threaded 16mm length. The fastener demonstrates compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.
