S-90821A350 Length 3/4" 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 with galvanic barrier coated 18-8 stainless steel construction, ideal for harsh industrial environments
- Efficient thread-forming installation that eliminates the need for pre-tapping in aluminum and sheet metal applications
- Integrated flange design provides wider bearing surface for enhanced load distribution and vibration resistance
- Self-drilling capability with No. 2 drill tip enables penetration up to 0.098" thickness without pilot holes
- External hex drive delivers maximum torque transfer for secure fastening and easy installation
- Full threading along the entire 3/4" length ensures consistent grip strength throughout the fastened materials
- BSD tapping screw design guarantees reliable performance in demanding sheet metal and aluminum assemblies
Professional Applications & Engineering Value
These flanged hex head tapping screws are engineered specifically for aluminum and sheet metal applications where corrosion resistance and installation efficiency are critical. The galvanic barrier coated 18-8 stainless steel construction prevents galvanic corrosion when fastening dissimilar metals, while the thread forming design creates strong, permanent threads without material removal. The integrated No. 2 drill tip penetrates up to 0.098" thickness, eliminating separate drilling operations and reducing assembly time. These BSD tapping screws with external hex drive provide excellent torque transmission for high-volume production environments, making them ideal for HVAC systems, electronic enclosures, and automotive components where vibration resistance and long-term reliability are essential.
Specification Summary & Compliance
This No. 8-18 x 3/4" tapping screw features a 0.164" thread diameter with 18 threads per inch in right-hand thread configuration. Manufactured to BSD standards for thread-forming applications, the screw maintains precise dimensional accuracy with fully threaded shank design. The galvanic barrier coating on 18-8 stainless steel provides enhanced corrosion protection while maintaining compliance with industry standards for industrial fasteners used in metal assemblies.
