S-91746A218 8-32 x 3/8" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip with knurled round head design for tool-free operation and secure handling
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for demanding environments
• High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing
• Quick installation with fully threaded coarse UNC pattern and Class 2A fit ensuring smooth engagement
• Space-saving low-profile head (3/16" height) for applications with limited clearance
• Regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries
• Durable thread integrity with right-hand threading maintaining consistent fastening performance

Professional Applications & Engineering Value

This 8-32 UNC thumb screw solves critical assembly challenges where frequent adjustments or tool-less access is required. The low-profile knurled round head provides exceptional torque application without specialized tools, while the 18-8 stainless steel material offers excellent resistance to corrosion and oxidation in industrial, electronic, and marine environments. The coarse UNC threading with Class 2A fit ensures rapid installation and reliable thread engagement in softer materials or pre-tapped holes. Engineers specify this component for access panels, calibration covers, and maintenance ports where durable thumb screws must withstand repeated cycling while maintaining mechanical integrity.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread specifications (8-32 size, 0.164" diameter). The 3/8" length and fully threaded design provide consistent fastening depth. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring hazardous substance restrictions are met for global industrial applications.