S-99607A279 M4 x 24 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
- Superior hand-tightening grip with knurled head texture for easy installation and removal without tools
- Excellent corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh environments
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing performance
- Precise thread engagement with Class 6g metric coarse threads ensuring consistent fit and vibration resistance
- Quick assembly efficiency through fully threaded design and flared collar for stable seating
- Durable flared collar profile that distributes pressure evenly and prevents over-tightening damage
- Compliance with environmental regulations including RoHS 3 and REACH for safe industrial use
Professional Applications & Engineering Value
This M4 thumb screw in 18-8 stainless steel delivers robust performance in demanding applications where frequent adjustments and corrosion resistance are critical. The knurled head provides exceptional manual grip, reducing assembly time in electronics, machinery panels, and instrumentation. Its fully threaded metric design with Class 6g tolerance ensures secure fastening in right-hand thread systems, minimizing loosening under vibration. The flared collar enhances stability, distributing clamp load effectively to protect sensitive components. Ideal for industrial maintenance, automotive assemblies, and outdoor equipment, this screw combines high strength with longevity, addressing common issues of wear and environmental degradation.
Specification Summary & Compliance
This thumb screw adheres to metric standards with M4 x 0.7 mm coarse threads and Class 6g thread fit for precise dimensional accuracy. It is manufactured from 18-8 stainless steel with a tensile strength of 80,000 psi and hardness of Rockwell B85. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.
