S-90079A245 1/4"-20 x 1" Thumb Screws
Thumb Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Enhanced manual control with a 1" diameter knurled head for superior grip in high-torque applications
- Exceptional durability from black-oxide steel construction providing corrosion resistance and extended service life
- Quick installation and removal through 1/4"-20 UNC coarse threads with Class 2A fit ensuring smooth engagement
- Reliable mechanical performance with 70,000 psi tensile strength and Rockwell B84 hardness for demanding environments
- Optimized low-profile design allowing clearance in space-constrained assemblies while maintaining full functionality
- Secure fastening capability with extended tip and partial threading for precise component alignment
- Compliance with international standards meeting RoHS 3 and REACH regulations for global industrial use
Professional Applications & Engineering Value
This black-oxide steel thumb screw delivers critical advantages in industrial settings where manual adjustments and frequent access are required. The knurled low-profile head provides exceptional tactile control without tools, while the UNC coarse threading with Class 2A fit ensures rapid installation in machinery, electronic enclosures, and test equipment. The extended tip facilitates alignment in partially threaded applications, reducing assembly time and preventing cross-threading. With 70,000 psi tensile strength and corrosion-resistant black-oxide finish, these thumb screws maintain integrity in vibration-prone environments, making them ideal for maintenance panels, adjustable components, and prototyping fixtures where reliability and quick access are paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and 1/4"-20 UNC coarse threads ensuring interchangeability. The screw features a 1" knurled head diameter with 5/8" thread length and 0.125" extended tip for controlled engagement. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I and REACH (EC 1907/2006) regulations, meeting international environmental and safety standards for industrial components.
