S-90179A153 6-32 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Easy manual operation with spade head design requiring no tools for quick adjustments
• Superior load distribution through integrated flange preventing surface damage
• High tensile reliability with 40,000 psi strength resisting mechanical failure
• Durable wear resistance from Rockwell B55 hardness maintaining thread integrity
• Precise coarse threading with UNC Class 2A fit ensuring consistent engagement
• Full-length threading providing maximum grip across the entire 1" length
• Right-hand direction following standard industrial conventions for intuitive installation

Professional Applications & Engineering Value

This 6-32 UNC coarse thread steel thumb screw solves critical challenges in industrial assembly and maintenance where tool-free access is essential. The spade head design (11/32" height × 5/16" width) provides exceptional torque application for human-hand operation, while the integrated flange (1/4" diameter) distributes clamping force to prevent damage to sensitive surfaces. Manufactured from hardened steel with Rockwell B55 hardness, it maintains thread form under repeated adjustments in machinery panels, electronic enclosures, and production equipment. The fully threaded construction ensures maximum engagement depth in both through-holes and tapped applications, making it ideal for prototyping, maintenance access panels, and frequently adjusted industrial components requiring reliable fastening without compromising structural integrity.

Specification Summary & Compliance

This thumb screw maintains Class 2A thread fit per ASME B1.1 standards with 6-32 UNC coarse threads (0.138" diameter) ensuring interchangeability. Manufacturing complies with industry standards for dimensional accuracy and mechanical properties, with 40,000 psi tensile strength verification. The steel construction meets general industrial requirements for corrosion resistance and mechanical performance in commercial applications.