S-91185A963 5/16"-18 x 1" 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 ergonomic two-arm plastic head design for rapid installation and removal without specialized equipment
- Superior corrosion resistance from 18-8 stainless steel construction ensuring long-term reliability in demanding environments
- Precision thread engagement with Class 3A UNC coarse threading providing secure fastening and vibration resistance
- Enhanced grip and insulation through black acetal plastic head that withstands temperature fluctuations from 32° to 180°F
- Full 1" threading coverage enabling deep penetration and consistent holding power across assembly applications
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial usage
- Optimized head dimensions (1½" width × 13/32" height) delivering comfortable torque application and visual alignment
Professional Applications & Engineering Value
This 5/16"-18 thumb screw combines the strength of 18-8 stainless steel with the practical benefits of a black acetal plastic head to address frequent access panel and equipment cover challenges. The UNC coarse threading with Class 3A fit ensures quick engagement and reliable clamping force in metal framing, machinery guards, and electronic enclosures where repeated adjustments are necessary. The two-arm design provides exceptional torque capability while the plastic head eliminates galvanic corrosion risks when mating with dissimilar metals. Engineered for maintenance-intensive environments, this fully threaded fastener delivers consistent performance in manufacturing, automotive, and industrial control systems where tool-less access and corrosion resistance are critical operational requirements.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse thread specifications (5/16"-18). The component maintains RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety. Threading extends the full 1" length with right-hand direction, while the acetal plastic head operates within specified temperature parameters (32°-180°F).
