S-90604A312 4-40 x 1" ASME B18.6.3 Stainless Steel Pan Head Combination Phillips/Slotted Screws
Stainless Steel Pan Head Combination Phillips/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 thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
- High mechanical strength and durability with a Rockwell B100 hardness and 100,000 psi tensile strength for reliable, long-lasting performance.
- Excellent thread engagement and assembly efficiency provided by the coarse UNC thread and Class 2A fit, ensuring secure fastening.
- Versatile drive compatibility with combined Phillips/Slotted (No. 1) drive, accommodating various installation tools.
- Full threading along the 1" length for maximum grip and holding power across the entire fastener.
- Compliance with major industry standards including ASME B18.6.3, ensuring dimensional accuracy and interchangeability.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict regulatory requirements.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 4-40 UNC coarse thread screws address critical challenges like vibration loosening and material degradation. The 18-8 stainless steel and passivated finish provide exceptional resistance to rust and chemicals, extending service life in machinery, electronics, and outdoor equipment. The rounded pan head design offers a low-profile, secure fit, while the fully threaded shank ensures uniform stress distribution. Compliant with ASME B18.6.3, these screws deliver consistent performance in assembly lines, reducing downtime and maintenance costs for engineers and procurement specialists.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including a Class 2A thread fit for reliable assembly and UNC coarse threading (4-40 size). Manufacturing follows ASME B18.6.3 specifications, ensuring uniformity and quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.
