S-94155A171 Length 1 1/4" Tapping Screws

Tapping Screws

0407FA00046 Tapping Screws
0407FA00046 Tapping Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0407FA00046
Equivalent to mcmaster :
94155A171

Basic Information

Tapping Screw Type A/AB
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.425"
Head Height 0.151"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 1 1/4"
Shank Cross Section Round

Thread Parameters

Screw Size No. 12
Thread Diameter 0.216"
Approximate Threads per Inch 11
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Pointed
Drive Style Square
Drive Size No. 3
Drill Bit Size 3/16"
Drill Bit Diameter 0.1875"
Tapping Method Thread Forming

Material & Strength

Material 18-8 Stainless Steel

Temperature & Environment

For Use In Sheet Metal
REACH Compliant
RoHS Compliant

Installation & Application

Maximum Drilling Thickness 0.025"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
  • Excellent thread-forming capability creates strong, permanent threads in sheet metal without requiring pre-tapped holes
  • Optimized pan head design with square drive provides secure tool engagement and prevents cam-out during installation
  • Precise dimensional accuracy with No. 12 size and 11 threads per inch ensures consistent performance and reliable fastening
  • Full threading and pointed tip enable easy starting and smooth penetration through sheet metal applications
  • Environmental compliance assurance with RoHS 3 and REACH certification for safe use in regulated industries
  • Versatile application range specifically engineered for 0.1875" drill bits in sheet metal up to 0.025" thickness

Professional Applications & Engineering Value

These 18-8 stainless steel sheet metal tapping screws deliver exceptional engineering value through their thread forming Type A/AB design, which eliminates the need for separate tapping operations in sheet metal assemblies. The fully threaded construction and pointed tip facilitate quick installation while maintaining material integrity. The pan head with square drive ensures maximum torque transmission without stripping, making them ideal for high-volume production environments. Engineered specifically for sheet metal applications requiring reliable fastening in challenging conditions, these screws provide superior vibration resistance and pull-out strength compared to conventional fasteners. Their corrosion-resistant properties make them suitable for outdoor equipment, HVAC systems, and electronic enclosures where durability is critical.

Specification Summary & Compliance

These No. 12 sheet metal tapping screws feature precise dimensional specifications including a 0.216" thread diameter with 11 threads per inch and 1-1/4" length. Manufactured to industry standards for thread forming Type A/AB screws, they maintain consistent Class 2A thread tolerances for reliable performance. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they meet the latest environmental and safety requirements for industrial applications. Designed for use with 3/16" (0.1875") drill bits, they provide optimal performance in sheet metal up to 0.025" maximum drilling thickness.

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