S-91249A727 5/16"-18 x 1 1/4" 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
- Exceptional corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh environments and reducing replacement frequency
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and structural integrity in demanding applications
- Rockwell B70 hardness provides excellent wear resistance and durability for extended service life
- Fully threaded UNC coarse pattern delivers superior holding power and faster installation in various materials
- Class 2A thread fit guarantees consistent, precise engagement and reduces cross-threading risks
- No. 4 Phillips drive offers secure tool engagement and efficient torque transfer during assembly
- Compliance with ASME B18.6.3, RoHS 3, and REACH ensures adherence to industry standards and environmental safety regulations
Professional Applications & Engineering Value
These Black-Oxide 18-8 Stainless Steel rounded head screws are engineered to address common industrial challenges such as corrosion, mechanical stress, and assembly efficiency. The Black-Oxide coating enhances surface protection against moisture and chemicals, making them ideal for outdoor equipment, marine hardware, and chemical processing installations. With a coarse UNC thread and fully threaded design, they provide rapid insertion and strong retention in soft materials like wood or plastic, reducing installation time. The pan head profile and Phillips drive facilitate flush mounting and easy access in confined spaces, ensuring reliable performance in assembly lines, machinery, and structural frameworks where durability and compliance are critical.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A fit for precise dimensional accuracy and consistent performance. It meets ASME B18.6.3 manufacturing specifications, ensuring uniformity and reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.
