S-90048A242 Length 1/2" Tapping Screws

Tapping Screws

0430FA00078 Tapping Screws
0430FA00078 Tapping Screws

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

Part No.
Part No. 0430FA00078
Equivalent to mcmaster :
90048A242

Basic Information

Tapping Screw Type A/AB
System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.362"
Head Height 0.081"
Flat Head Profile Undercut

Dimensions

Length 1/2"
Shank Cross Section Round

Thread Parameters

Screw Size No. 10
Thread Diameter 0.19"
Approximate Threads per Inch 12
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Pointed
Drive Style Phillips
Drive Size No. 2
Drill Bit Size No. 21
Drill Bit Diameter 0.159"
Countersink Angle 82°
Tapping Method Thread Forming

Material & Strength

Material Zinc-Plated 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
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in harsh industrial environments.
  • Effortless installation thanks to the fully threaded, pointed tip and thread-forming design, reducing assembly time and labor costs.
  • Secure, flush fastening with an 82° flat undercut head that countersinks neatly into sheet metal, preventing snagging and improving aesthetics.
  • High torque transmission via the No. 2 Phillips drive, minimizing cam-out and providing reliable, repeatable tightening.
  • Excellent holding power in thin materials, with a maximum drilling thickness of 0.025" for secure sheet metal joints.
  • Wide compatibility with standard No. 21 drill bits, streamlining procurement and reducing tooling inventory.
  • Compliance with global safety standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

These No. 10 tapping screws are engineered for demanding sheet metal applications, where vibration resistance and pull-out strength are critical. The zinc-plated steel material offers durability against corrosion, while the thread-forming A/AB type design creates strong, permanent threads in pre-drilled holes without tapping, reducing the risk of strip-out in thin-gauge metals. The flat undercut head with an 82° countersink angle ensures a smooth, flush finish, ideal for enclosures, HVAC systems, and automotive assemblies where surface integrity matters. By combining ease of installation with robust holding power, these screws minimize assembly errors and enhance structural reliability in industrial settings.

Specification Summary & Compliance

This tapping screw adheres to standard inch measurements, with a thread diameter of 0.19" and approximately 12 threads per inch for consistent engagement. It features a fully threaded right-hand design with a pointed tip for easy starts. The product conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use. Manufactured to precise dimensions, including a Class 2A thread fit, it guarantees reliable performance in sheet metal fastening applications.

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