S-91783A561 1/4"-28 x 1" 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
- Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
- Exceptional mechanical strength offering 100,000 psi tensile strength and Rockwell B100 hardness for heavy-duty applications.
- Precise thread engagement with Class 2A fit and UNF fine threads, ensuring reliable, vibration-resistant connections.
- Full threading along the 1" length provides maximum grip and uniform load distribution in assemblies.
- Standard slotted drive and rounded head design enables easy installation and a clean, professional appearance.
- Compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability in regulated applications.
- Environmental and safety compliance with RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.
Professional Applications & Engineering Value
This 1/4"-28 UNF rounded head slotted screw is engineered to address critical fastening challenges in demanding environments. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, making it suitable for marine, food processing, and outdoor equipment. The fine thread and Class 2A thread fit ensure tight, secure connections that resist loosening under vibration, while the fully threaded design offers consistent clamping force across the entire 1" length. Ideal for machinery, automotive, and electronic enclosures, this screw delivers reliable performance where precision, durability, and regulatory compliance are paramount.
Specification Summary & Compliance
This screw adheres to ASME B18.6.3 specifications, ensuring precise dimensions including a 0.472" head diameter and Class 2A thread fit for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances and safe for various industrial applications.
