S-93035A331 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Reliable leak-proof sealing through integrated rubber O-ring, preventing fluid and dust ingress in sheet metal assemblies
• Efficient thread-forming installation that creates strong, precise mating threads without pre-tapping, reducing assembly time
• Broad temperature tolerance from -40° to 225°F, ensuring performance stability in varied operating conditions
• Secure Phillips drive engagement with No. 1 drive size for controlled torque application and reduced cam-out risk
• Optimized pan head design providing a low-profile, rounded finish with good bearing surface for consistent clamping
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This 18-8 stainless steel tapping screw delivers critical sealing performance in sheet metal applications where environmental sealing is paramount. The thread forming design eliminates the need for separate tapping operations, reducing labor and tooling costs while creating strong, strip-resistant threads in ductile materials. The integrated rubber O-ring compresses during installation to form a reliable seal against moisture, dust, and air penetration—solving common leakage issues in enclosures, HVAC assemblies, and outdoor equipment. Manufactured from corrosion-resistant 18-8 stainless steel, it maintains integrity in humid or chemically exposed environments, while the Phillips pan head offers both aesthetic cleanliness and practical drive engagement for production line efficiency.

Specification Summary & Compliance

This No. 4-24 x 5/16" tapping screw features unified right-hand threads with approximately 24 TPI and fully threaded shank for maximum engagement. The blunt tip aids alignment during installation into pre-drilled holes (recommended No. 44 drill bit, 0.086" diameter). Manufacturing complies with industry standards for thread forming screws (Type B), and the product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental regulations for industrial components.