S-94836A216 4-40 x 1/2" 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 with chrome-plated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Optimized drive engagement through Phillips No. 1 drive design, preventing cam-out during high-torque installation
- Precision thread fit with Class 2A UNC coarse threads ensuring consistent mating and vibration resistance
- Full-threaded design maximizing grip length and distribution of clamping force across the entire fastener
- Regulatory compliance meeting ASME B18.6.3 specifications while adhering to RoHS 3 and REACH environmental standards
- Versatile pan head profile providing a low-profile, rounded contact surface suitable for diverse assembly applications
Professional Applications & Engineering Value
Engineered for precision assemblies requiring corrosion-resistant fastening solutions, these 4-40 UNC rounded pan head Phillips screws deliver critical performance in electrical enclosures, machinery panels, and instrumentation. The chrome-plated 18-8 stainless steel construction combats oxidation and chemical exposure, while the coarse thread design enhances installation speed in softer materials and prevents cross-threading. With fully threaded shanks and Class 2A thread fit, these screws maintain consistent clamping force in vibrating environments, reducing maintenance intervals. Their compliance with ASME B18.6.3 ensures dimensional interoperability with standardized components, making them ideal for OEM manufacturing and MRO operations where reliability and regulatory adherence are paramount.
Specification Summary & Compliance
This 1/2" length screw features 4-40 UNC coarse threads manufactured to Class 2A tolerance for consistent mating with nuts and tapped holes. Manufacturing conforms to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product is verified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to hazardous substance restrictions and environmental safety protocols for industrial distribution.
