S-99461A946 Length 18 mm Tapping Screws

Tapping Screws

0503FA00091 Tapping Screws
0503FA00091 Tapping Screws

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

Part No.
Part No. 0503FA00091
Equivalent to mcmaster :
99461A946

Basic Information

Tapping Screw Type TRS
System of Measurement Metric

Head Parameters

Head Type Rounded
Head Diameter 5.3 mm
Head Height 2.1 mm
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 18 mm
Shank Cross Section Round

Thread Parameters

Screw Size M3
Approximate Thread Pitch 1.34 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. 41
Drill Bit Diameter 0.096"
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 for long-lasting performance in demanding environments
  • Efficient thread forming design creates strong, permanent threads in plastic materials without chips or debris
  • Optimized torque transfer through Phillips No. 1 drive prevents cam-out and ensures secure installation
  • Material-friendly blunt tip prevents cracking and damage to plastic components during assembly
  • Full threading along 18mm length provides maximum engagement and pull-out resistance
  • Precision M3 size with 1.34mm pitch ensures consistent performance and reliable fastening in plastic applications
  • Compliant with industry regulations including RoHS 3 and REACH for global manufacturing compatibility

Professional Applications & Engineering Value

These M3 thread forming screws are specifically engineered for plastic assembly applications where material integrity is paramount. The TRS (Thread Rolling Screw) design with 1.34mm pitch creates strong, vibration-resistant threads by displacing plastic material rather than cutting it, eliminating weak points and potential failure areas. The 18-8 stainless steel construction provides excellent corrosion resistance while maintaining the necessary strength for plastic fastening. The Phillips pan head with No. 1 drive size offers reliable torque transmission without damaging the screw head, making them ideal for high-volume production environments. These thread forming fasteners are particularly valuable in electronics enclosures, automotive plastic components, and consumer products where plastic assembly requires durable, long-lasting fastening solutions.

Specification Summary & Compliance

These metric M3 tapping screws feature precise 1.34mm pitch threading and 18mm length with full threading for maximum engagement. The TRS thread forming design follows industry standards for plastic fastening applications. Manufactured from 18-8 stainless steel with a Phillips pan head and No. 1 drive size, these screws are designed for use with No. 41 drill bits (0.096" diameter). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial applications.

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