S-91830A407 10-32 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Effortless hand-tightening and removal thanks to the knurled round head design for maximum grip
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-term performance
• Precise and secure fastening ensured by the 10-32 UNF fine thread with Class 2A fit for minimal backlash
• Full-length threading provides consistent engagement and clamping force along the entire 3/4" length
• Stable alignment during installation from the integrated collar, preventing cross-threading
• Global compliance and safety with RoHS 3 and REACH regulations, meeting international environmental standards

Professional Applications & Engineering Value

This 18-8 stainless steel thumb screw is engineered to solve common assembly challenges in industrial settings. The knurled head texture and raised round profile deliver a non-slip grip, enabling quick tool-free adjustments in tight spaces or on frequently accessed panels. Its core value lies in the 10-32 UNF fine thread, which offers a higher number of threads per inch compared to coarse threads, resulting in superior vibration resistance and a tighter seal—critical in precision equipment, electronic enclosures, and machinery maintenance. The fully threaded design ensures uniform stress distribution, while the collar acts as a built-in washer, protecting sensitive surfaces from damage. Made from durable stainless steel, it withstands corrosive environments, making it a reliable choice for OEMs and MRO applications where strength, ease of use, and compliance are paramount.

Specification Summary & Compliance

This thumb screw adheres to UNF (Unified National Fine) thread standards with a Class 2A thread fit for consistent, precision tolerances. The dimensional specifications include a 10-32 thread size, 3/4" length, 1/2" head diameter, and a 3/8" collar diameter. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial and electronic markets.