S-91745A578 5/16"-18 x 1/2" Thumb Screws
Thumb Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Effortless manual operation with wide 7/8" spade head design for superior grip and torque application without tools
- Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh environments
- Quick installation and removal with coarse UNC threading and Class 2A fit for reliable engagement
- Maximum holding power achieved through full threading along the entire 1/2" length
- Durable industrial performance with right-hand thread direction for standard applications
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe usage
- Versatile thumb screw solution combining 5/16"-18 UNC thread size with spade head for various manual fastening needs
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw delivers critical advantages in industrial settings where frequent adjustments and corrosion resistance are paramount. The spade head design (7/8" width) enables rapid manual tightening in confined spaces where tools are impractical, while the coarse UNC threading provides faster installation and reduced cross-threading risks compared to fine threads. The fully threaded 1/2" length ensures consistent clamping force across the entire engagement area, preventing loosening in vibrating equipment. Particularly valuable for electrical enclosures, machinery access panels, and production jigs, these thumb screws eliminate galvanic corrosion concerns in moist environments while maintaining Class 2A thread fit precision for reliable performance across countless cycles.
Specification Summary & Compliance
Manufactured to precise UNC coarse thread standards with 5/16"-18 thread size and Class 2A thread fit tolerance for consistent engagement. The right-hand thread direction and fully threaded 1/2" length provide standardized installation. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence for industrial distribution.
