S-91744A583 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 hand tightening with spade head design for rapid assembly/disassembly without tools
- Superior corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
- Enhanced grip and stability through flanged design that distributes load pressure evenly
- Quick installation with coarse UNC threading that engages faster than fine threads
- Precise thread engagement with Class 2A fit ensuring consistent performance across applications
- Full-length threading provides maximum adjustability and holding power along the entire 1" length
- Environmental compliance meeting RoHS 3 and REACH standards for sustainable manufacturing
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw solves critical industrial challenges where frequent access and corrosion resistance are paramount. The spade head design enables rapid tool-free operation in maintenance panels, electrical enclosures, and machinery guards that require regular servicing. The flanged construction prevents over-tightening and surface damage while the coarse UNC threading (5/16"-18) ensures quick engagement in various materials. Made from corrosion-resistant 18-8 stainless steel, it withstands moisture, chemicals, and outdoor exposure far better than plated steel alternatives. The fully threaded 1" length provides maximum adjustability for varying material thicknesses, making it ideal for prototyping, fixtures, and equipment where precise clamping force is essential.
Specification Summary & Compliance
Manufactured to precise dimensional standards with UNC coarse threads (5/16"-18) and Class 2A thread fit for reliable engagement. The screw features a spade head thumb design (3/4" height, 11/16" width) with 0.563" flange diameter and right-hand threading. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial and commercial applications.
