S-90065A221 Length 7/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring longevity in demanding industrial environments.
• Efficient thread forming design (AB Type) creates strong, reliable threads in sheet metal without pre-tapping, reducing installation time.
• Optimized for sheet metal applications with a pointed tip and full threading for maximum grip and vibration resistance.
• Clean, flush installation thanks to the standard flat head with 82° countersink angle, providing a smooth surface finish.
• Secure and stable fastening with Phillips No. 1 drive, offering good torque transfer and reducing cam-out risks.
• Precision fit and consistent performance using a No. 44 drill bit (0.086"), ensuring accurate hole sizing and reliable assembly.
• Durable and fully threaded design enhances load distribution and pull-out strength in thin materials.

Professional Applications & Engineering Value

This No. 4-24 thread forming screw is engineered to address common challenges in sheet metal assembly, such as material fatigue and loosening under stress. Made from 18-8 stainless steel, it offers excellent resistance to rust and corrosion, making it ideal for HVAC, electronics enclosures, and automotive panels. The AB type tapping screw forms precise mating threads as it's driven, eliminating the need for separate tapping operations and reducing labor costs. The Phillips flat head with an 82° angle ensures a flush fit, preventing snagging and improving aesthetics. With full threading and a pointed tip, it provides superior holding power in thin-gauge metals, enhancing structural integrity and assembly speed in high-volume production environments.

Specification Summary & Compliance

This screw adheres to standard inch measurements with a No. 4-24 thread size, 7/8" length, and Class 2A thread fit for reliable engagement. It conforms to industry standards for thread forming screws (AB Type) and is manufactured to precise dimensional tolerances. The product is compliant with RoHS and REACH environmental regulations, ensuring safe use in various industrial applications without hazardous substances.