S-91500A082 2-56 x 3/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless 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 316 stainless steel construction, ideal for harsh environments and chemical exposure
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B80 hardness provides excellent durability and resistance to wear and deformation
- Undercut flat head design allows for a flush, low-profile installation in countersunk applications
- Fully threaded coarse UNC thread delivers faster installation and superior holding power in various materials
- Passivated finish enhances surface corrosion resistance without compromising dimensional integrity
- Phillips drive with No. 1 size offers common tool compatibility and efficient torque transfer during assembly
Professional Applications & Engineering Value
These 316 stainless steel flat head screws are engineered to address critical challenges in industrial and marine applications where corrosion resistance and structural integrity are paramount. The combination of a fully threaded 2-56 UNC coarse thread and 82° countersink angle ensures secure fastening in soft metals, plastics, and composite materials, preventing pull-out and maintaining clamp force. The undercut flat head profile allows for a completely flush finish, eliminating protrusions in precision assemblies. With a passivated finish enhancing the innate corrosion resistance of 316 stainless steel, these Phillips drive screws are ideal for chemical processing equipment, marine hardware, and food-grade machinery where exposure to moisture, salts, and aggressive agents is common. Their high 70,000 psi tensile strength and consistent Class 2A thread fit provide reliable performance in high-vibration environments, reducing maintenance needs and downtime.
Specification Summary & Compliance
These screws feature a 2-56 UNC coarse thread with Class 2A tolerance for consistent fit and assembly. Manufacturing and dimensional compliance adhere to ASME B18.6.3 specifications. They are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in restricted substance-sensitive applications.
