S-98273A115 4-40 x 3/8" 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 410 stainless steel construction, ideal for harsh industrial environments
- Self-tapping efficiency with Type 23 thread cutting design eliminates need for pre-tapped holes in materials
- Enhanced drive stability with Phillips No. 1 drive for secure installation and reduced cam-out risk
- Optimal material compatibility specifically engineered for brass, cast iron, and sheet metal applications
- Precision installation with No. 41 drill bit compatibility for accurate hole sizing and secure fastening
- Full-length threading ensures maximum grip strength and uniform load distribution
- Regulatory compliance meets RoHS 3 and REACH standards for environmental and safety requirements
Professional Applications & Engineering Value
These 4-40 UNC thread cutting screws in 410 stainless steel provide exceptional engineering solutions for metal fabrication and assembly operations. The Type 23 thread cutting design with coarse UNC threading creates precise mating threads in brass, cast iron, and sheet metal substrates without requiring pre-tapped holes, significantly reducing installation time and labor costs. The Phillips pan head configuration offers a low-profile, rounded head that sits flush while providing ample drive torque transmission. Manufactured from corrosion-resistant 410 stainless steel, these screws maintain structural integrity in demanding environments where moisture, chemicals, or temperature variations are concerns. The blunt tip design prevents material splitting while ensuring proper thread engagement, making them ideal for industrial fastening applications requiring reliable, long-term performance.
Specification Summary & Compliance
These thread cutting screws feature 4-40 UNC coarse threads with Class 2A tolerance for consistent fit and performance. The fully threaded design with right-hand direction ensures maximum holding power. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The screws are engineered for use with No. 41 drill bits (0.096" diameter) for precise hole preparation in specified materials.
