S-91746A828 1/2"-13 x 2 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced manual torque application thanks to the knurled round head design for secure, non-slip grip
• High mechanical strength and durability with 80,000 psi tensile strength and Rockwell B83 hardness
• Quick and easy coarse thread engagement provided by the 1/2"-13 UNC thread for faster assembly
• Reliable thread fit and interchangeability ensured by Class 2A thread tolerance standards
• Versatile fastening solution with a partially threaded design for precise clamping control
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common assembly challenges in industrial maintenance, machinery, and electronic enclosures. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, extending service life in demanding conditions. The knurled round head and slotted drive offer dual drive options, allowing for high-torque manual adjustments without specialized tools. Its coarse UNC thread ensures rapid installation and removal, reducing downtime in production lines. The partially threaded shank design prevents over-tightening and provides consistent clamping force, making it a reliable choice for repeated access panels, jigs, and fixtures.

Specification Summary & Compliance

This thumb screw features a 1/2"-13 UNC thread with a Class 2A thread fit for consistent dimensional accuracy and interchangeability. It is manufactured from 18-8 Stainless Steel with a tensile strength of 80,000 psi and Rockwell B83 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.