S-91772A741 4-48 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for high-stress applications.
- Precise and secure fastening due to the UNF fine thread and Class 2A fit, ensuring tight, vibration-resistant connections.
- Efficient installation and removal with a No. 1 Phillips drive and standard pan head design, reducing assembly time and tool wear.
- Full thread engagement along the 1/4" length for maximum grip and load distribution in thin materials or tight spaces.
- Compliance with industry standards including ASME B18.6.3, ensuring consistent quality and interchangeability.
- Environmentally safe usage as it is RoHS 3 and REACH compliant, meeting global regulatory requirements for hazardous substances.
Professional Applications & Engineering Value
This 4-48 UNF fine thread pan head Phillips screw is engineered to address critical challenges in industrial assembly, such as vibration loosening and corrosion-induced failure. The passivated 18-8 stainless steel provides excellent resistance to oxidation and chemicals, making it suitable for electronics, automotive, and marine applications where moisture or corrosive agents are present. The fine thread design enhances holding power in brittle materials, while the Class 2A thread fit ensures consistent engagement without cross-threading. Its fully threaded 1/4" length allows for adjustable clamping force, and the Phillips drive enables quick, reliable fastening with standard tools, reducing installation errors and maintenance downtime in high-volume production environments.
Specification Summary & Compliance
This screw features a 4-48 UNF fine thread with Class 2A tolerance for precise fit, a pan head with No. 1 Phillips drive, and dimensions of 1/4" length, 0.219" head diameter, and 0.08" head height. It is manufactured in accordance with ASME B18.6.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to safety and environmental standards for industrial use.
