S-90417A125 Length 3/8" Tapping Screws

Tapping Screws

0505FA00166 Tapping Screws
0505FA00166 Tapping Screws

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

Part No.
Part No. 0505FA00166
Equivalent to mcmaster :
90417A125

Basic Information

Tapping Screw Type TRS
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.27"
Head Height 0.097"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 3/8"
Shank Cross Section Tri-Lobe

Thread Parameters

Screw Size No. 6
Thread Diameter 0.138"
Approximate Threads per Inch 19
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style Phillips
Drive Size No. 2
Drill Bit Size 1/8"
Drill Bit Diameter 0.125"
Tapping Method Thread Forming

Material & Strength

Material Black-Oxide 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 Black-Oxide Steel finish, extending service life in various industrial environments
  • Exceptional holding power in plastic materials due to thread forming TRS design that creates strong, permanent threads without chips
  • Reduced installation torque and cam-out with Phillips No. 2 drive for efficient, secure fastening operations
  • Enhanced material displacement and vibration resistance from Tri-Lobe shank cross-section design
  • Complete thread engagement with fully threaded blunt tip for consistent performance across the entire fastener length
  • Optimized for 1/8" pre-drilled holes in plastic components, minimizing preparation time and ensuring proper fit
  • Compliance with international environmental standards including RoHS 3 and REACH for global manufacturing applications

Professional Applications & Engineering Value

These No. 6 x 3/8" TRS Black-Oxide Steel tapping screws are specifically engineered for plastic assembly applications where traditional fasteners often fail. The thread forming technology eliminates the risk of plastic cracking during installation by displacing material rather than cutting it, creating stronger threads that won't strip under vibration or thermal cycling. The Tri-Lobe shank design provides superior resistance to loosening while the Black-Oxide finish offers protection against corrosion in demanding environments. Ideal for electronic enclosures, automotive trim, and consumer products, these screws deliver reliable performance where plastic-to-plastic or plastic-to-metal connections require durable, long-lasting fastening solutions.

Specification Summary & Compliance

This thread forming tapping screw features a No. 6 size with 3/8" length, 0.138" thread diameter, and 19 threads per inch. Manufactured with TRS (Thread Rolling Screw) technology and Class 2A thread fit for consistent performance. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. Designed for use with 1/8" (0.125") drill bits in plastic materials with right-hand threading and standard pan head profile.

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