S-92949A718 1/2"-13 x 1 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 with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring reliable, vibration-resistant connections
- Easy installation and removal thanks to the 5/16" hex drive and fully threaded design for maximum grip and efficiency
- Rounded button head profile provides a low-profile, finished appearance while reducing surface damage risks
- Full compliance with industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
- Versatile coarse threading (1/2"-13 UNC) enables quick assembly and superior performance in various materials
Professional Applications & Engineering Value
Engineered for demanding industrial environments, this 1/2"-13 UNC rounded head hex screw addresses critical challenges in machinery assembly, structural frameworks, and outdoor equipment. The 18-8 stainless steel material, enhanced by a passivated finish, provides long-term protection against rust and chemical exposure, reducing maintenance costs. Its Class 3A thread fit and coarse UNC threading ensure secure fastening even under vibration, while the hex drive allows for high-torque installation without stripping. Ideal for applications requiring both high tensile strength and aesthetic appeal, this screw is a reliable choice for OEMs and maintenance teams in construction, automotive, and marine sectors.
Specification Summary & Compliance
This fastener maintains precise Class 3A thread fit per UNC standards, with a 1/2"-13 coarse thread and full threading along the 1 3/4" length. Manufacturing adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial and consumer applications without hazardous substances.
