S-99607A254 5/16"-24 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
- Effortless manual operation with a knurled round head and flared collar design for superior grip and quick adjustments without tools.
- Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments.
- High tensile strength of 80,000 psi ensures reliable fastening under heavy loads and vibration.
- Precision Class 2A thread fit with 5/16"-24 UNF fine threading for secure, accurate engagement and reduced cross-threading risk.
- Full threading along the 1" length provides maximum holding power and flexibility in various material thicknesses.
- Durable Rockwell B85 hardness maintains thread integrity and resists wear over repeated use.
- Compliance with RoHS 3 and REACH regulations guarantees environmental safety and suitability for global markets.
Professional Applications & Engineering Value
This 18-8 Stainless Steel Thumb Screw is engineered to address common industrial challenges such as frequent adjustments, exposure to corrosive elements, and the need for reliable, tool-free fastening. The knurled head with flared collar offers enhanced grip, reducing slippage and operator fatigue in high-use scenarios like machinery access panels, electronic enclosures, and prototyping setups. Its fully threaded design and Class 2A UNF fine threads ensure precise alignment and strong retention, minimizing loosening in vibrating environments. Made from corrosion-resistant stainless steel, it excels in applications requiring durability and hygiene, such as medical devices, food processing equipment, and outdoor instrumentation, providing long-term performance without degradation.
Specification Summary & Compliance
This thumb screw adheres to UNF thread standards with a 5/16"-24 thread size and Class 2A fit for precise dimensional accuracy. It is manufactured to deliver consistent performance with a tensile strength of 80,000 psi and Rockwell B85 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets stringent environmental and safety requirements for industrial use.
