S-97008A722 5/16"-18 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Tool-free operation with 3/4" spade head design for comfortable hand tightening and quick adjustments
• Enhanced corrosion resistance through zinc-plated steel construction for extended service life in industrial environments
• Superior load distribution with integrated flange that prevents surface damage and improves clamping force
• Reliable thread engagement with UNC coarse thread pattern that resists cross-threading and speeds installation
• Consistent mechanical performance maintained through Rockwell B55 hardness and 40,000 psi tensile strength
• Full-length threading provides maximum adjustment range and secure fastening along the entire shank
• Precision manufacturing with Class 2A thread fit ensures smooth assembly and interchangeability

Professional Applications & Engineering Value

This zinc-plated steel thumb screw delivers exceptional value in applications requiring frequent access or adjustment. The spade head design with 3/4" height and 11/16" width provides substantial gripping surface for hand operation, eliminating tool requirements in maintenance panels, equipment covers, and access doors. The UNC coarse thread configuration with Class 2A fit ensures rapid installation while resisting vibration-induced loosening in machinery, electronic enclosures, and industrial controls. The integrated flange distributes clamping pressure over a wider area (0.563" diameter), protecting sensitive surfaces from deformation. With full threading along the 1/2" length, this fastener offers maximum engagement depth for secure mounting in various material thicknesses.

Specification Summary & Compliance

This thumb screw features precision 5/16"-18 UNC coarse threads manufactured to Class 2A fit tolerances for consistent performance. The right-hand thread direction and fully threaded design provide complete engagement capability. Manufactured from steel with zinc plating for corrosion protection, the fastener delivers 40,000 psi tensile strength and Rockwell B55 hardness for durable performance. The product is fully RoHS 3 (2015/863/EU) compliant, meeting international environmental standards for restricted substances.