S-90485A437 Length 20 mm Tapping Screws

Tapping Screws

0508FA00049 Tapping Screws
0508FA00049 Tapping Screws

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

Part No.
Part No. 0508FA00049
Equivalent to mcmaster :
90485A437

Basic Information

Tapping Screw Type TRS
System of Measurement Metric

Head Parameters

Head Type Flat
Head Diameter 4.7 mm
Head Height 1.7 mm
Flat Head Profile Standard

Dimensions

Length 20 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"
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 for long-lasting performance in demanding environments
  • Excellent thread-forming capability with TRS design creates strong, permanent threads in plastic materials without pre-tapping
  • Optimal flush mounting with standard flat head profile and 90° countersink angle for clean, professional finishes
  • Enhanced driving efficiency with Phillips No. 1 drive size providing secure tool engagement and reduced cam-out risk
  • Maximum holding power through full threading along the 20mm length for superior pull-out resistance in plastic assemblies
  • Precision dimensional accuracy with M2.5 metric sizing and 1.12mm pitch ensuring consistent performance and interchangeability
  • Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

These M2.5 TRS thread forming screws are specifically engineered to address common fastening challenges in plastic applications where traditional fasteners often fail. The 18-8 stainless steel construction provides exceptional corrosion resistance while the thread forming design displaces plastic material to create strong, permanent threads without creating chips or debris. This eliminates the need for pre-tapped holes and reduces assembly time significantly. The Phillips flat head configuration with 90° countersink angle ensures flush mounting in plastic components, preventing snagging while maintaining aesthetic appeal. These metric tapping screws deliver reliable performance in electronic enclosures, automotive plastic components, and consumer products where vibration resistance and long-term durability are critical requirements.

Specification Summary & Compliance

These M2.5 x 20mm tapping screws feature precise metric dimensions with full threading and 1.12mm pitch for consistent performance. The TRS thread forming design follows industry standards for plastic fastening applications, requiring No. 45 drill bit (0.082") for proper hole preparation. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The Phillips No. 1 drive system and standard flat head profile maintain compatibility with common assembly tools and procedures.

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