S-90485A447 Length 20 mm Tapping Screws

Tapping Screws

0508FA00057 Tapping Screws
0508FA00057 Tapping Screws

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

Part No.
Part No. 0508FA00057
Equivalent to mcmaster :
90485A447

Basic Information

Tapping Screw Type TRS
System of Measurement Metric

Head Parameters

Head Type Flat
Head Diameter 5.5 mm
Head Height 1.8 mm
Flat Head Profile Standard

Dimensions

Length 20 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. 2
Drill Bit Size No. 41
Drill Bit Diameter 0.096"
Countersink Angle 90°
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 various environments without rust or degradation.
  • Efficient thread forming design creates strong, permanent threads in plastic materials, eliminating the need for pre-tapped holes and reducing assembly time.
  • Secure fastening with Phillips No. 2 drive provides reliable torque transmission and reduces the risk of cam-out during installation.
  • Standard flat head with 90° countersink allows for a flush finish in plastic assemblies, enhancing aesthetics and preventing snagging.
  • Fully threaded blunt tip ensures consistent holding power along the entire 20mm length, ideal for demanding plastic applications.
  • Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global markets.
  • Precise M3 x 20mm metric sizing with 1.34mm pitch offers reliable fit and performance in standardized plastic components.

Professional Applications & Engineering Value

These M3 TRS flat head tapping screws are specifically engineered for plastic assembly applications, where traditional fasteners may strip or fail. The 18-8 stainless steel material provides excellent strength and corrosion resistance, while the thread forming design (TRS type) displaces plastic material to create robust, high-holding threads without chips or debris. This eliminates the need for additional inserts or adhesives, reducing material costs and assembly complexity. The Phillips No. 2 drive ensures easy installation with standard tools, and the fully threaded blunt tip distributes stress evenly, preventing cracking in brittle plastics. Ideal for electronics enclosures, automotive trim, and consumer products, these screws deliver reliable performance in plastic fastening where vibration resistance and long-term integrity are critical.

Specification Summary & Compliance

This M3 x 20mm TRS flat head screw features a fully threaded design with 1.34mm pitch and right-hand thread direction. It complies with standard metric dimensions and is designed for use with a No. 41 drill bit (0.096") and 90° countersink angle. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring adherence to environmental and safety regulations for industrial use.

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