S-93015A219 5/16"-18 x 1 1/2" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced manual grip with knurled 1 1/8" diameter head for quick, tool-free adjustments in tight spaces
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically exposed environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for heavy-duty applications
- Reliable fastening performance through UNC coarse threading and Class 2A thread fit ensuring vibration resistance
- Optimized installation control with extended tip design and partial threading for precise alignment and reduced cross-threading risk
- Low-profile round head maintains clearance while providing ample torque surface for hand tightening
- Compliance with environmental regulations including RoHS 3 and REACH for global manufacturing suitability
Professional Applications & Engineering Value
This 5/16"-18 UNC thumb screw delivers critical advantages in industrial settings where frequent access and reliability are paramount. The 18-8 stainless steel composition resists oxidation and chemical degradation, making it suitable for electrical enclosures, machinery guards, and outdoor equipment. The knurled head texture ensures secure grip even with oily hands or gloves, reducing installation time and eliminating tool dependency. With coarse UNC threading and partial threading design, it maintains strong holding power in wood, metal, and plastic assemblies while preventing material stripping. The extended tip facilitates initial alignment in pre-tapped holes, minimizing assembly errors in production lines and maintenance workflows.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with unified coarse (UNC) 5/16"-18 threading and right-hand direction. Features a 1 1/2" overall length with 1" threaded portion and 3/16" extended tip. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.
