S-90200A636 3/8"-16 x 3" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced torque application with knurled round head for secure, tool-free tightening and loosening in high-vibration environments
• Superior corrosion resistance through black-oxide steel finish, extending service life in demanding industrial conditions
• High-strength performance with 70,000 psi tensile strength and Rockwell B84 hardness for reliable load-bearing capacity
• Quick installation efficiency with fully threaded UNC coarse thread design for rapid engagement and reduced assembly time
• Precise thread compatibility with Class 2A thread fit ensuring consistent mating with standard UNC nuts and threaded holes
• Low-profile design advantage with round-head configuration for applications with limited clearance requirements
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This black-oxide steel thumb screw delivers exceptional engineering value for industrial applications requiring frequent adjustments or tool-free operation. The knurled head texture provides superior grip even with gloved hands, solving the common problem of slippage during high-torque applications. The 3/8"-16 UNC coarse threading ensures rapid installation and removal, significantly reducing maintenance downtime in production environments. With full threading along the 3" length, this fastener offers maximum engagement depth for secure fastening in thick materials or stacked components. The low-profile round head design minimizes protrusion in confined spaces while maintaining excellent torque transmission capabilities. These features make it ideal for machinery access panels, electrical enclosures, jigs and fixtures, and equipment requiring regular service access where reliability and quick operation are critical.

Specification Summary & Compliance

This thumb screw features precision 3/8"-16 UNC coarse threads with Class 2A thread fit for consistent dimensional accuracy and reliable mating with standard components. Manufactured from high-strength steel with black-oxide surface treatment for enhanced corrosion protection. The product maintains Rockwell B84 hardness and 70,000 psi tensile strength for demanding applications. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(a)-I and REACH (EC 1907/2006) standards, ensuring environmental regulatory adherence for industrial use.