S-99512A623 Length 1" Tapping Screws
Tapping 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
- Superior torque transmission with Torx T10 drive, reducing cam-out and tool wear for efficient assembly.
- Secure, vibration-resistant fastening in plastic materials due to the Tri-Lobe shank design that displaces material for a tight hold.
- Enhanced corrosion resistance from zinc-plated steel construction, ensuring durability in various industrial environments.
- Prevents plastic cracking and damage with a blunt tip and thread-forming design, eliminating the need for pre-tapped holes.
- Consistent, reliable performance with fully threaded 1" length, providing full engagement in plastic assemblies.
- Compliance with environmental standards including RoHS 3 and REACH, making them safe for regulated industries.
- Optimized for use with No. 37 drill bits, ensuring precise hole sizing and reducing installation errors.
Professional Applications & Engineering Value
These No. 4-20 thread forming screws are engineered specifically for plastic applications, where traditional fasteners can cause stress cracking or stripping. The Tri-Lobe shank and thread-forming tapping method displace plastic material to create strong, permanent threads without pre-tapping, saving time and labor in assembly lines. Made from zinc-plated steel, they offer excellent resistance to corrosion, extending service life in electronics, automotive, and consumer goods. The Torx T10 drive ensures high torque transmission with minimal slippage, reducing assembly defects and improving productivity in high-volume manufacturing. Ideal for securing plastic housings, components, and enclosures, these screws provide reliable fastening solutions that meet rigorous industrial demands.
Specification Summary & Compliance
This product features a No. 4-20 thread size with a 1" fully threaded length, designed for use in plastic with a recommended No. 37 drill bit (0.104" diameter). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets. The screw follows standard thread-forming (TRS) specifications, providing consistent performance without additional tapping requirements.
