Square Head Fine Thread Fractional Size Cup Point Set Screw w/ Plain Finish
Square Head Fine Thread Cup Point Set Screws
Fractional Sizes with Plain Finish for Precision Holding
Square head fine thread fractional size cup point set screws with a plain finish are precision fasteners engineered for applications that demand accurate adjustment, strong holding power, and repeatable performance. The square head design allows easy installation and removal using standard wrenches, making these set screws ideal for maintenance, alignment, and assembly tasks in industrial environments.
Cup Point Tip Design
Secure Grip and Vibration Resistance
The cup point features a concave cutting edge that embeds into the mating surface, creating a strong mechanical lock. This design resists loosening from vibration and rotational forces, ensuring dependable performance in dynamic applications. Cup point set screws are commonly used to secure gears, pulleys, collars, and bearings to shafts where slip prevention is critical.
Fine Thread Fractional Sizes
Enhanced Control and Holding Accuracy
Manufactured in fractional fine thread (UNF) sizes, these set screws provide increased thread engagement per inch, allowing for finer adjustment and greater holding strength compared to coarse threads. Fine threads are especially effective in hard materials and applications requiring precise positioning, reduced backlash, and improved resistance to loosening under load.
Plain Finish Construction
Dimensional Precision and Adaptability
The plain finish maintains exact thread dimensions and surface geometry without added coatings. This ensures accurate fitment and consistent torque values during installation. Plain finish set screws are well-suited for indoor or controlled environments and can be custom-coated or treated if additional corrosion protection is required.
High-Strength Carbon Steel Material
Built for Industrial Reliability
Typically produced from high-strength carbon steel, these set screws offer excellent tensile strength, wear resistance, and long service life. Precision machining ensures smooth thread engagement and reliable performance across repeated installations and adjustments.
Common Applications
Versatile Fastening for Mechanical Systems
Square head fine thread cup point set screws are widely used in power transmission assemblies, machine tools, industrial equipment, automotive components, and MRO operations. Their combination of precise fine threading, aggressive cup point grip, and easy square head installation makes them a trusted solution for secure, accurate shaft locking in fractional size applications.