S-93923A353 4-40 x 3/8" ASME B18.6.3 Stainless Steel Pan Head Slotted Screws
Stainless Steel Pan Head 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
- Exceptional corrosion resistance thanks to 316 stainless steel construction and passivated finish, ideal for harsh chemical and marine environments
- High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable performance under stress
- Precision threading with Class 2A fit and UNC coarse thread profile ensures secure, vibration-resistant connections
- Easy installation and removal with standard slotted drive design compatible with common hand tools
- Full thread coverage across the 3/8" length provides maximum grip and load distribution
- Regulatory compliance meets ASME B18.6.3 specifications and environmental standards (RoHS 3/REACH)
- Rounded pan head design offers a low-profile, finished appearance while preventing surface damage
Professional Applications & Engineering Value
This 4-40 UNC rounded pan head screw in 316 stainless steel delivers critical performance where corrosion resistance and mechanical integrity are paramount. The combination of passivated finish and marine-grade alloy provides superior protection against chlorides, acids, and extreme temperatures, making it ideal for chemical processing equipment, marine hardware, and food-grade applications. The slotted drive allows for quick assembly with standard tools, while the coarse UNC threading and Class 2A fit ensure reliable engagement in various materials. Fully threaded along its 3/8" length, it maximizes clamping force and prevents loosening in high-vibration industrial environments.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 standards with Class 2A thread fit and UNC coarse thread profile (4-40). Dimensions include 0.219" head diameter, 0.068" head height, and 3/8" length. Mechanical properties include 80,000 psi tensile strength and Rockwell B85 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Fully threaded construction with right-hand thread direction.
