S-91735A398 1/4"-28 x 1" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 in harsh environments due to 316 Stainless Steel construction and passivated finish
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable, long-term performance
- Precise and secure fastening ensured by Class 2A thread fit and UNF fine threads for vibration resistance
- Efficient installation and removal with a Phillips No. 3 drive and user-friendly pan head design
- Full-length threading provides maximum grip and load distribution across the entire fastener length
- Compliance with major industry standards including ASME B18.6.3 for dimensional consistency and reliability
- Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives
Professional Applications & Engineering Value
This 1/4-28 UNF Pan Head Phillips Screw is engineered to solve critical challenges in demanding industrial applications. The core value lies in its 316 Stainless Steel material, which offers far greater resistance to chlorides and acidic conditions compared to standard grades, preventing premature failure in chemical processing, marine, or food industry equipment. The combination of a fully threaded design and UNF fine thread provides superior clamping force and vibration resistance, making it ideal for assemblies subject to dynamic loads or thermal cycling. The passivated finish enhances the innate corrosion resistance, ensuring longevity even when the protective layer is microscopically scratched. This screw delivers reliable performance by addressing the primary concerns of corrosion, mechanical strength, and long-term fastening integrity in professional settings.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF thread with a Class 2A thread fit for consistent, precise assembly. It is manufactured in compliance with the ASME B18.6.3 standard, guaranteeing dimensional accuracy and interchangeability. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.
