S-99461A933 Length 12 mm Tapping Screws

Tapping Screws

0503FA00079 Tapping Screws
0503FA00079 Tapping Screws

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

Part No.
Part No. 0503FA00079
Equivalent to mcmaster :
99461A933

Basic Information

Tapping Screw Type TRS
System of Measurement Metric

Head Parameters

Head Type Rounded
Head Diameter 4.4 mm
Head Height 1.8 mm
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 12 mm
Shank Cross Section Round

Thread Parameters

Screw Size M2.5
Approximate Thread Pitch 1.12 mm
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style Phillips
Drive Size No. 1
Drill Bit Size No. 45
Drill Bit Diameter 0.082"
Tapping Method Thread Forming

Material & Strength

Material 18-8 Stainless Steel

Temperature & Environment

For Use In Plastic
REACH Compliant
RoHS Compliant
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 18-8 stainless steel construction, ensuring long-term reliability in humid or demanding environments.
  • Efficient thread forming design (TRS type) creates strong, permanent threads in plastic materials without pre-tapping, reducing assembly time and costs.
  • Optimized for plastic applications with a blunt tip to prevent material cracking and fully threaded shank for maximum grip and vibration resistance.
  • Easy installation and removal using a standard Phillips No. 1 drive, minimizing cam-out and improving torque transfer during fastening.
  • Precise dimensional accuracy with M2.5 x 12mm size and 1.12mm pitch, ensuring consistent performance and interchangeability in metric assemblies.
  • Rounded pan head profile provides a low-profile, finished appearance while distributing clamp load evenly across the surface.
  • Compliance with environmental regulations including RoHS 3 and REACH, making them suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

These M2.5 TRS tapping screws are specifically engineered to address common challenges in plastic assembly, such as stress cracking, strip-out, and inconsistent thread engagement. Made from 18-8 stainless steel, they offer excellent strength and corrosion resistance, ideal for electronics enclosures, automotive components, and consumer appliances where durability is critical. The thread forming action displaces plastic material to create robust, load-bearing threads without generating chips, reducing the risk of contamination. With a Phillips drive and recommended No. 45 drill bit, installation is quick and reliable, enhancing production efficiency. The fully threaded design and blunt tip ensure secure fastening in thermoplastics and other polymers, preventing damage while maintaining clamp force under vibration.

Specification Summary & Compliance

This product meets standard metric dimensions with M2.5 screw size, 12mm length, and 1.12mm approximate thread pitch. It features a rounded pan head (4.4mm diameter, 1.8mm height) and Phillips No. 1 drive for consistent fastening. Manufactured in accordance with thread forming (TRS) specifications for plastic materials, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use.

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