S-93015A223 5/16"-18 x 3" Thumb Screws

Key Features & Benefits at a Glance

• Superior manual grip with 1-1/8" diameter knurled head for tool-free operation in tight spaces
• Exceptional corrosion resistance from 18-8 stainless steel construction for long service life in harsh environments
• High mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for heavy-duty applications
• Reliable thread engagement through Class 2A UNC coarse threads ensuring consistent fastening performance
• Quick installation alignment with extended 3/16" tip for precise component positioning
• Reduced assembly profile with low-profile round head design for space-constrained applications
• Global compliance readiness meeting RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This 5/16"-18 UNC thumb screw delivers critical engineering advantages where frequent adjustments or tool-less operation are required. The 18-8 stainless steel construction provides excellent corrosion resistance for industrial environments, while the knurled head texture ensures positive grip even with oily hands or gloves. The partially threaded design with coarse UNC threading offers rapid installation in machinery guards, access panels, and electronic enclosures. The extended tip facilitates alignment in assembly operations, reducing installation time and preventing cross-threading. With 80,000 psi tensile strength, this component maintains integrity under vibration and repeated adjustments in manufacturing equipment, test fixtures, and maintenance applications.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threads (5/16"-18) and right-hand threading. Features include 3" overall length, 2-1/2" thread length, and 1-1/8" diameter knurled head. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.