S-91781A460 1/2"-13 x 1 3/4" 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 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments.
- High tensile strength of 80,000 psi ensures reliable load-bearing capacity and joint integrity in demanding applications.
- Precise Class 2A thread fit with UNC coarse threading for easy installation and secure, vibration-resistant fastening.
- Standard 82° countersink angle allows the flat head to sit flush with surfaces, providing a smooth finish and reducing snagging.
- Full threading along the 1-3/4" length offers maximum grip and adjustability throughout the entire fastener engagement.
- Rockwell B80 hardness provides excellent durability and resistance to wear and deformation during installation and use.
- Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH ensures material safety and interoperability.
Professional Applications & Engineering Value
This 1/2"-13 UNC flat head slotted screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and the need for flush mounting. The 18-8 stainless steel material, enhanced by a passivated finish, provides exceptional resistance to rust and chemical exposure, making it ideal for outdoor equipment, marine hardware, and food processing machinery. The coarse UNC thread and Class 2A fit facilitate quick assembly while maintaining a secure hold, reducing the risk of thread stripping. The flat head with slotted drive and standard 82° countersink angle ensures a smooth, unobtrusive surface finish, which is critical in applications where protrusions are unacceptable, such as in conveyor systems or precision instruments.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A dimensional accuracy for consistent fit. It is manufactured in compliance with ASME B18.6.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring environmental safety and material restrictions adherence.
