S-90179A144 6-32 x 1/4" Thumb Screws

Key Features & Benefits at a Glance

• Easy hand-tightening operation with spade-shaped thumb head for maximum torque without tools
• Enhanced durability and wear resistance from steel construction with Rockwell B55 hardness rating
• Reliable load-bearing capability supported by 40,000 psi tensile strength for demanding applications
• Secure fastening with precise fit through Class 2A thread tolerance and UNC coarse threading
• Increased surface contact and stability with integrated flange design to prevent over-tightening
• Full-length threading ensures consistent engagement across the entire 1/4" length
• Right-hand thread direction provides standard, intuitive installation for operators

Professional Applications & Engineering Value

This 6-32 UNC Spade Thumb Screw delivers exceptional value in industrial settings where frequent adjustments or tool-less access is required. The steel construction with Rockwell B55 hardness resists deformation under repeated use, while the coarse thread spacing enables quick installation and removal in soft materials or pre-tapped holes. The flanged design distributes clamping force evenly, protecting sensitive surfaces and reducing the risk of loosening from vibration. Ideal for access panels, electronic enclosures, and machinery guards, this fully threaded thumb screw combines the convenience of hand operation with the reliability needed for industrial maintenance and assembly applications.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit standards with UNC coarse thread profile (6-32 size, 0.138" diameter). Features include right-hand thread direction, fully threaded 1/4" length, and 1/4" flange diameter. Complies with industry-standard dimensional requirements for inch-series fasteners and is suitable for applications requiring consistent mechanical performance.