S-90096A436 1/4"-20 x 5/8" ASME B18.6.3, SAE J933 Tapping Screws
Tapping 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
- Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
- High-strength, reliable fastening in materials like aluminum, brass, cast iron, and sheet metal due to the thread-cutting (Type F) design.
- Efficient installation and removal with an external hex drive and hex head, providing a secure grip for high-torque applications.
- Vibration-resistant locking ensured by the serrated flange, which helps prevent loosening under dynamic loads.
- Optimized for rapid assembly with coarse UNC 1/4"-20 threading, allowing for quicker driving and reduced cross-threading risk.
- Full-length threading for maximum grip and holding power along the entire 5/8" length in various material thicknesses.
- Guaranteed dimensional consistency and performance reliability, meeting the rigorous ASME B18.6.3 standard.
Professional Applications & Engineering Value
This zinc-plated steel flanged tapping screw is engineered to address common challenges in metalworking and assembly, such as stripping threads and fastener loosening. The thread-cutting (Type F) tip and coarse UNC thread form precise, durable threads in ductile materials like aluminum, brass, cast iron, and sheet metal, eliminating the need for pre-tapped holes and speeding up production. The serrated locking flange provides a secure, vibration-resistant fit, critical for machinery and automotive components subject to constant stress. Combined with an external hex drive for high torque application, this screw ensures reliable, long-term fastening in industrial settings, reducing maintenance and replacement costs.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with a Class 2A fit for standard clearance, a blunt tip, and full threading along its 5/8" length. Manufactured from zinc-plated steel with a hex head and external hex drive, it complies with ASME B18.6.3 specifications (referencing SAE J933) for dimensional accuracy and performance. The product is also RoHS 3 (2015/863/EU) Compliant, ensuring it meets environmental regulations for hazardous substance restrictions.
