S-90087A542 1/4"-20 x 1" 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, ensuring long-lasting performance in harsh industrial environments.
- Effortless installation through thread cutting design, allowing self-tapping into materials like aluminum, brass, and cast iron without pre-tapping.
- High torque resistance with Phillips No. 3 drive, reducing cam-out risks and enabling secure fastening in sheet metal applications.
- Reliable thread engagement with coarse UNC 1/4"-20 threads and full threading, providing strong holding power and vibration resistance.
- Broad material compatibility for use in aluminum, brass, cast iron, and sheet metal, streamlining inventory for diverse projects.
- Precise fit and durability with standardized pan head design (0.492" diameter), ensuring consistent performance and easy wrench access.
- Compliance with industry standards including ASME B18.6.3 and RoHS 3, guaranteeing quality and environmental safety for professional use.
Professional Applications & Engineering Value
These 1/4"-20 zinc-plated steel tapping screws are engineered to address common industrial fastening challenges, such as material fatigue and assembly inefficiencies. The thread cutting Type F design and coarse UNC threads enable quick, secure installation in ductile materials like aluminum, brass, and cast iron, eliminating the need for separate tapping operations and reducing labor costs. The zinc-plated finish enhances corrosion resistance, making these screws ideal for sheet metal assemblies exposed to moisture or outdoor conditions. With a Phillips No. 3 drive and standardized dimensions, they ensure consistent torque application and minimize stripping, supporting high-volume production lines and maintenance tasks where reliability is critical.
Specification Summary & Compliance
These screws feature precise UNC 1/4"-20 coarse threads with a thread diameter of 0.25" and are fully threaded for uniform load distribution. They conform to ASME B18.6.3 and SAE J933 specifications, ensuring dimensional accuracy and performance reliability. Additionally, they are RoHS 3 (2015/863/EU) Compliant, meeting environmental regulations for hazardous substance restrictions.
