S-90198A100 Length 1/4" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance in harsh environments thanks to premium 316 stainless steel construction
- Efficient thread forming action creates strong, permanent threads in sheet metal without pre-tapping
- Clean, flush installation with undercut flat head design that sits perfectly in 82° countersinks
- Secure, cam-out resistant driving provided by the No. 1 Phillips drive style
- Maximum material penetration with fully threaded shank and pointed tip for reliable fastening
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for industrial safety
- Optimized for thin materials with capability to drill through up to 0.025" maximum thickness
Professional Applications & Engineering Value
This 316 stainless steel tapping screw delivers exceptional performance in demanding sheet metal applications where corrosion resistance is critical. The thread forming technology eliminates the need for separate tapping operations, creating strong, vibration-resistant threads that won't loosen under stress. The undercut flat head profile ensures a flush finish that prevents snagging while maintaining structural integrity. Engineered for use with a No. 44 drill bit (0.086"), this Phillips flat head screw provides reliable fastening in thin gauge materials up to 0.025" thickness, making it ideal for HVAC systems, electronic enclosures, and precision metal fabrication where corrosion resistant screws are essential for long-term durability.
Specification Summary & Compliance
This No. 4-24 x 1/4" tapping screw features right-hand threads with 24 TPI and full threading for maximum grip. Manufactured to precise dimensional standards with Class 2A thread tolerances, the screw ensures consistent performance across applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest industrial safety and environmental standards. Designed specifically for sheet metal fastening with recommended No. 44 drill bit preparation and 82° countersink angle for optimal installation.
