S-99607A252 5/16"-24 x 1/2" 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 installation and removal with knurled round head design for superior manual grip in tight spaces
- Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable, repeated use
- Precision thread engagement with Class 2A UNF fine threads ensuring secure fastening and vibration resistance
- Enhanced stability from flared collar design that distributes load evenly and prevents surface damage
- Maximum thread utilization through full threading along the entire 1/2" length for versatile positioning
- Regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
This 5/16"-24 UNF thumb screw delivers critical performance advantages in industrial applications where frequent access and corrosion resistance are paramount. The 18-8 stainless steel construction provides excellent durability against moisture, chemicals, and temperature variations, while the knurled round head with flared collar design ensures positive grip without specialized tools. The fully threaded configuration and Class 2A thread fit enable precise adjustment and secure fastening in electronic enclosures, machinery panels, and instrumentation. Engineered for 80,000 psi tensile strength, these industrial thumb screws maintain integrity under repeated cycling, reducing maintenance downtime in manufacturing, aerospace, and automotive applications.
Specification Summary & Compliance
This thumb screw features 5/16"-24 UNF fine threads with Class 2A thread fit for precision tolerance, manufactured from 18-8 stainless steel with Rockwell B85 hardness. The 1/2" length is fully threaded with right-hand direction, complemented by a 41/64" diameter knurled round head and 1/2" diameter flared collar. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety.
