S-90417A128 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
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide steel coating, extending service life in various industrial environments.
- Excellent holding power in plastic materials due to the TRS thread forming design, reducing the risk of stripping and ensuring secure, vibration-resistant fastening.
- Efficient installation with No. 2 Phillips drive, providing a common and reliable drive option for quick assembly and reduced tool slippage.
- Optimized thread engagement with 19 TPI and tri-lobe shank cross-section, creating strong, permanent threads in plastic without pre-tapping.
- Versatile pan head design with a standard rounded profile for a low-profile finish and even clamping force distribution.
- Full 3/4" threading ensures maximum grip along the entire length, enhancing pull-out strength in plastic assemblies.
- Compliance with strict environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.
Professional Applications & Engineering Value
These Black-Oxide Steel TRS tapping screws are engineered specifically for plastic fastening applications, where traditional screws may cause cracking or weak threads. The thread forming (TRS) design with a tri-lobe shank displaces material during installation, creating strong, load-bearing threads that resist loosening under vibration and thermal cycling. This makes them ideal for industrial assembly in automotive components, electronics enclosures, and consumer appliances. The black-oxide finish adds a layer of corrosion protection, while the Phillips drive and blunt tip facilitate precise, efficient installation without damaging delicate plastic substrates, reducing assembly time and improving product reliability.
Specification Summary & Compliance
This screw features a 0.138" thread diameter and 3/4" length with 19 TPI fully threaded, Class 2A inch-series tolerance for consistent fit. It adheres to TRS (Thread Rolling Screw) standards for thread forming applications in plastics, with a pan head and No. 2 Phillips drive. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
