S-99607A248 5/16"-18 x 3/4" 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
- Superior manual grip with knurled round head design for easy hand-tightening without tools in tight spaces
- Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing performance
- Secure fastening engagement through Class 2A thread fit and UNC coarse threads that resist vibration loosening
- Enhanced stability from flared collar design that distributes clamping pressure evenly across surfaces
- Full threading versatility allowing installation at any point along the 3/4" length for adjustable positioning
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
Engineered for industrial applications requiring frequent adjustments and reliable fastening, this 18-8 stainless steel thumb screw solves common accessibility challenges in machinery maintenance, electronic enclosures, and assembly jigs. The knurled head texture provides positive grip even with oily hands or gloves, while the flared collar prevents sinking into softer materials. With UNC coarse threads and Class 2A thread fit, installation is quick and secure, reducing assembly time in production environments. The fully threaded design offers flexibility in engagement depth, making it ideal for applications where panel thickness varies. Right-hand threading ensures intuitive operation for technicians, streamlining maintenance procedures.
Specification Summary & Compliance
This 5/16"-18 UNC thumb screw features precision Class 2A thread fit with coarse thread spacing for reliable engagement. Manufacturing conforms to UNC thread standards with 0.313" thread diameter and 3/4" fully threaded length. 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 use worldwide.
