S-98164A913 1/2"-13 x 4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 chemical and marine environments
- Enhanced thread reliability through Class 3A thread fit, ensuring precise engagement and vibration resistance
- High tensile strength rated at 70,000 psi for demanding industrial applications requiring secure fastening
- Passivated surface treatment that increases corrosion protection and extends service life in aggressive conditions
- Convenient hex drive installation with 5/16" drive size for efficient torque application and reduced tool slippage
- Full threading design providing consistent grip along the entire 4" length for maximum holding power
- Compliant with major industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 316 stainless steel rounded head screws deliver exceptional performance where corrosion resistance is critical. The UNC coarse thread configuration ensures rapid installation and superior resistance to vibration loosening in heavy machinery, chemical processing equipment, and marine applications. The passivated finish provides an additional protective layer against chemical attack and oxidation, while the hex drive design allows for high-torque installation without cam-out. With Rockwell B55 hardness and 70,000 psi tensile strength, these fully threaded screws maintain integrity under extreme mechanical stress, making them ideal for structural applications requiring reliable, long-term fastening solutions in corrosive environments.
Specification Summary & Compliance
This 1/2"-13 x 4" rounded head screw features Class 3A thread fit precision and UNC coarse threading for optimal engagement. Manufactured to ASME B18.3 specifications with complete compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The screw maintains dimensional accuracy with 0.5" thread diameter and 4" full threading, ensuring consistent performance across industrial applications.
