S-92949A599 5/16"-24 x 3/4" 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 thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Exceptional thread engagement and vibration resistance from Class 3A precision thread fit and UNF fine threading
- High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B55 hardness
- Secure and efficient installation enabled by the 3/16" hex drive and rounded button head design
- Full thread coverage for maximum grip and load distribution across the entire 3/4" length
- Reliable compliance with major industry standards including ASME B18.3, RoHS 3, and REACH
- Right-hand threading for standard, intuitive assembly in industrial machinery and equipment
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head hex screw is engineered to solve critical challenges in industrial assembly, where corrosion, vibration, and high stress are common. The passivated finish significantly enhances its resistance to rust and chemical exposure, making it suitable for outdoor, marine, or chemical processing equipment. The Class 3A thread fit and UNF fine threading ensure tight, secure fastening that minimizes loosening under dynamic loads, while the hex drive and button head style allow for easy installation in confined spaces. With a 70,000 psi tensile strength, it provides reliable performance in structural applications, from machinery frames to precision instruments, reducing maintenance and replacement frequency.
Specification Summary & Compliance
This screw features a 5/16"-24 UNF thread with a Class 3A precision fit, ensuring high dimensional accuracy and interchangeability. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial and electronic applications without hazardous substances.
