S-90772A583 5/16"-18 x 1" Thumb Screws
Thumb 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
- Hand-tightening convenience with spade-shaped thumb head for tool-free installation and adjustment in tight spaces
- Surface protection through nylon tip that prevents marring, scratching, or damage to sensitive materials
- Corrosion resistance from zinc-plated steel construction ensuring long-term reliability in industrial environments
- High load capacity with 40,000 psi tensile strength and Rockwell B71 hardness for demanding applications
- Precise thread engagement through Class 2A UNC coarse threads providing reliable fastening without cross-threading
- Full-length threading offering maximum grip and adjustment range along the entire 1" length
- Regulatory compliance meeting RoHS 3 and REACH standards for safe use across various industries
Professional Applications & Engineering Value
This zinc-plated steel thumb screw with protective nylon tip solves critical fastening challenges where both accessibility and surface protection are paramount. The spade head design enables quick hand adjustments in confined spaces, eliminating the need for tools during maintenance or assembly operations. The nylon plastic tip provides essential protection for delicate surfaces in electronics, machinery panels, and precision equipment, preventing damage while maintaining secure fastening. With UNC coarse threads and Class 2A fit, installation is straightforward and reliable, reducing assembly time and preventing cross-threading issues. The combination of 40,000 psi tensile strength and Rockwell B71 hardness ensures this 5/16"-18 thumb screw withstands vibration and repeated adjustments in industrial settings, making it ideal for access panels, electrical enclosures, and machinery requiring frequent service.
Specification Summary & Compliance
This heavy-duty thumb screw features precise 5/16"-18 UNC coarse threads with Class 2A thread fit for reliable engagement and consistent performance. Manufactured from zinc-plated steel with full threading along the 1" length, it maintains dimensional accuracy per industry standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
