S-90273A446 1/2"-13 x 1 1/4" ASME B18.6.3 Steel Phillips Flat Head Screws
Steel Phillips Flat Head 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 tensile strength of 60,000 psi ensures reliable, vibration-resistant fastening for heavy-duty applications.
- Rockwell B70 hardness provides excellent durability and resistance to wear during installation and use.
- Class 2A thread fit with coarse UNC threading allows for quick assembly and reduced cross-threading risks.
- 82° countersink angle and flat head design enables a flush, secure fit that minimizes protrusion and snagging.
- Fully threaded shank offers maximum grip length and consistent holding power along the entire fastener.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to strict quality, safety, and environmental standards.
Professional Applications & Engineering Value
This 1/2"-13 UNC flat head Phillips screw is engineered to address critical challenges in industrial assembly, such as the need for vibration resistance and corrosion protection. The zinc-plated steel material combats rust in humid or outdoor settings, while the coarse thread design ensures rapid installation in wood, metal, and composite materials. Its flat head with an 82° countersink provides a smooth, flush finish, reducing the risk of snagging in machinery or equipment. Ideal for construction, automotive, and heavy machinery applications, this screw delivers reliable performance where high tensile strength and long-term durability are paramount, minimizing maintenance and downtime.
Specification Summary & Compliance
This screw features a Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy and easy assembly. It meets ASME B18.6.3 specifications for dimensional and mechanical requirements, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances for safe industrial use.
