S-97424A590 1/4"-80 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Superior grip and handling with knurled black acetal plastic head that ensures secure manual operation without tools
• Exceptional thread precision with Class 3A fit and ultra fine 1/4"-80 threading for reliable, vibration-resistant fastening in delicate assemblies
• High tensile strength of 60,000 psi provides dependable load-bearing capacity for demanding industrial applications
• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in various environmental conditions
• Ball tip design facilitates easy insertion and alignment, reducing assembly time and preventing cross-threading
• Temperature resistance up to 180°F maintains performance in moderate heat environments
• Full compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible manufacturing for global supply chains

Professional Applications & Engineering Value

This 1/4"-80 ultra fine thread thumb screw delivers critical advantages in precision assembly environments where tool-free adjustments are essential. The knurled black acetal plastic head provides exceptional tactile grip even with gloves or oily hands, solving slippage issues common in maintenance and production settings. Its 18-8 stainless steel body and Class 3A thread fit ensure consistent performance in electronic enclosures, optical equipment, and instrumentation where vibration resistance and precise thread engagement are paramount. The ball tip design prevents damage to sensitive components during installation, while the ultra fine threading offers superior holding power in thin materials and fine-adjustment applications. These features combine to reduce assembly time, minimize component damage, and provide reliable service in industrial controls, medical devices, and precision machinery.

Specification Summary & Compliance

This thumb screw features precision 1/4"-80 UNS ultra fine threads with Class 3A thread fit for exacting dimensional accuracy. The fully threaded design and right-hand thread direction follow standard industrial practices. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and chemical safety throughout the product lifecycle. The combination of 18-8 stainless steel construction and acetal plastic head provides optimal performance within specified temperature ranges up to 180°F.