S-90179A829 10-32 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual torque application with a spade head design (7/16" width and 15/32" height) for secure, tool-free tightening and loosening in confined spaces.
• Superior load-bearing capacity thanks to hardened steel construction with a tensile strength of 40,000 psi, ensuring reliable performance under stress.
• Consistent and precise thread engagement with a Class 2A fine thread fit (10-32 UNF), reducing the risk of cross-threading and providing vibration resistance.
• Increased stability and distribution of clamping force from the integrated flange (0.344" diameter), minimizing surface damage and improving joint integrity.
• Excellent durability and wear resistance due to the steel material's Rockwell B55 hardness, extending the screw's service life in repetitive use.
• Full threading along the 1/2" length for maximum grip depth and versatility in various material thicknesses.
• Compliance with environmental and safety standards as RoHS 3 (2015/863/EU) Compliant, making it suitable for regulated industries.

Professional Applications & Engineering Value

This 10-32 UNF Thumb Screw is engineered to address common challenges in industrial assembly and maintenance, where tool-free, rapid fastening is essential. The spade head design, combined with a flange, provides an ergonomic grip that enhances manual operation efficiency, reducing installation time and the need for specialized tools. Constructed from high-strength steel with a Rockwell B55 hardness, it resists deformation and wear in high-usage environments such as electronic enclosures, machinery panels, and prototyping setups. The fine thread and Class 2A fit ensure tight, secure connections that withstand vibrations, making it ideal for applications in automotive, aerospace, and consumer electronics where precision and reliability are critical. By integrating a right-hand thread and full threading, it offers consistent performance in industrial thumb screws for both temporary and permanent fixtures.

Specification Summary & Compliance

This thumb screw adheres to UNF thread standards with a size of 10-32, thread diameter of 0.19", and Class 2A thread fit for precise dimensional accuracy and interchangeability. It is fully threaded with a length of 1/2" and includes a flange diameter of 0.344". Manufactured from steel, it meets RoHS 3 (2015/863/EU) compliance for restricted substance control, ensuring it is suitable for global industrial and electronic applications without environmental concerns.