S-91858A537 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws
Stainless Steel Slotted 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 316 stainless steel construction, ideal for harsh industrial environments and extended service life.
- Enhanced durability and strength offering 70,000 psi tensile strength and Rockwell B80 hardness for reliable performance under high stress.
- Precise thread engagement with Class 2A thread fit and UNC coarse threading, ensuring easy installation and secure fastening.
- Improved surface protection through passivated finish, reducing the risk of galling and increasing resistance to chemical exposure.
- Flush mounting capability with a standard 82° countersink angle and flat head design, providing a smooth, unobtrusive finish.
- Full threading for maximum grip along the entire 1/2" length, distributing load evenly and enhancing joint integrity.
- Compliance with industry standards including ASME B18.6.3, ensuring consistent quality and interchangeability in professional applications.
Professional Applications & Engineering Value
These 1/4"-20 UNC flat head slotted screws are engineered to address critical challenges in demanding industrial settings. Made from 316 stainless steel, they excel in corrosive environments such as chemical processing, marine, and food equipment, where material integrity is paramount. The passivated finish further enhances corrosion resistance, reducing maintenance needs and downtime. With a coarse thread spacing and Class 2A thread fit, these screws facilitate quick, reliable installation in various materials, minimizing the risk of cross-threading. The fully threaded design ensures uniform stress distribution, making them ideal for applications requiring high tensile strength and vibration resistance, from machinery assembly to structural frameworks.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including Class 2A thread fit and UNC thread type with coarse spacing, ensuring compatibility and ease of use. It meets ASME B18.6.3 specifications for consistent manufacturing quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial practices.
