S-91783A578 5/16"-18 x 1/2" ASME B18.6.3 Stainless Steel Round Head Slotted Screws
Stainless Steel Round Head Slotted 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
- Exceptional corrosion resistance with 18-8 stainless steel and passivated finish for long-term reliability in harsh environments
- High tensile strength of 100,000 psi ensures secure fastening under heavy loads and vibration
- Rockwell B100 hardness provides excellent durability and resistance to wear and deformation
- Class 2A thread fit with UNC coarse threading enables quick assembly and reliable engagement in various materials
- Fully threaded design offers maximum grip and holding power along the entire screw length
- ASME B18.6.3 compliance guarantees precise dimensional accuracy and interchangeability
- RoHS 3 and REACH compliance ensures environmental responsibility and regulatory acceptance
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw with 5/16"-18 UNC coarse threading delivers exceptional performance in demanding industrial applications. The combination of 100,000 psi tensile strength and Rockwell B100 hardness provides reliable fastening in high-stress environments, while the passivated finish significantly enhances corrosion resistance against chemicals, moisture, and atmospheric exposure. The fully threaded design ensures maximum thread engagement and pull-out resistance, making it ideal for machinery assembly, electrical enclosures, and structural components where vibration resistance is critical. The slotted drive allows for straightforward installation with standard tools, and the rounded head profile offers a finished appearance while distributing clamping force effectively.
Specification Summary & Compliance
This 5/16"-18 UNC x 1/2" rounded head slotted screw features Class 2A thread fit per ASME B18.6.3 standards, ensuring precise dimensional tolerances and reliable performance. The inch-system specifications include a head diameter of 0.59", head height of 0.216", and right-hand threading. The product meets ASME B18.6.3 manufacturing specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.
