S-94320A744 1/4"-20 x 1 1/4" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual operation with knurled thumb head and high-profile design for superior grip without tools
• Corrosion-resistant nylon construction ensures reliable performance in humid or chemical environments
• Wide temperature tolerance from -40° to 185°F maintains integrity in varying operational conditions
• Quick installation with coarse UNC threads and Class 2A fit for rapid assembly and disassembly
• Durable mechanical performance with 11,000 psi tensile strength for secure fastening in light-duty applications
• Full threading provides consistent engagement along the entire 1-1/4" length for versatile positioning
• Environmentally compliant with RoHS 3 standards for safe use in regulated industries

Professional Applications & Engineering Value

This high-profile round head thumb screw addresses critical assembly challenges where tool-less access and electrical insulation are paramount. The nylon plastic construction provides inherent corrosion resistance, eliminating galvanic compatibility issues in electronic enclosures, medical devices, and outdoor equipment. The knurled head texture combined with the elevated profile delivers exceptional torque application capability, reducing operator fatigue in frequent adjustment scenarios. With coarse UNC 1/4"-20 threading and Class 2A fit, installation speed is optimized while maintaining secure engagement in plastic and soft metal substrates. The material's dielectric properties make it ideal for electrical applications where metal fasteners could cause short circuits.

Specification Summary & Compliance

This fastener features 1/4"-20 UNC coarse threads with Class 2A tolerance for consistent fit in standard applications. The fully threaded 1-1/4" length provides maximum engagement flexibility. Manufacturing complies with RoHS 3 (2015/863/EU) environmental regulations, ensuring restriction of hazardous substances. The right-hand thread direction and slotted drive complement standard installation practices while the knurled round head design follows ergonomic principles for manual operation.