S-99461A725 Length 3/8" Tapping Screws

Tapping Screws

0503FA00055 Tapping Screws
0503FA00055 Tapping Screws

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

Part No.
Part No. 0503FA00055
Equivalent to mcmaster :
99461A725

Basic Information

Tapping Screw Type TRS
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.167"
Head Height 0.062"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 3/8"
Shank Cross Section Tri-Lobe

Thread Parameters

Screw Size No. 2
Thread Diameter 0.086"
Approximate Threads per Inch 28
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style Phillips
Drive Size No. 1
Drill Bit Size No. 48
Drill Bit Diameter 0.076"
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, ideal for demanding environments and extended service life.
  • Eliminates the need for pre-tapped holes through advanced TRS thread forming technology, reducing assembly steps and labor costs.
  • Exceptional drive stability and reduced cam-out provided by the Phillips No. 1 drive, ensuring efficient and secure installation.
  • Enhanced material displacement and superior strip-out resistance due to the tri-lobe shank cross-section, creating durable, high-strength threads in plastic.
  • Precise installation and reduced risk of material cracking with a blunt tip design, protecting delicate plastic components during fastening.
  • Full-length threading for maximum grip and holding power across the entire 3/8" length, ensuring a reliable and vibration-resistant connection.
  • Compliance with major environmental regulations including RoHS 3 and REACH, making them suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This No. 2 x 3/8" stainless steel tapping screw is engineered specifically for plastic fastening challenges. The TRS thread forming method and tri-lobe shank work in tandem to cold-form a mating thread in ductile plastics, eliminating the need for inserts and providing exceptional resistance to vibration loosening. The 18-8 stainless steel material offers excellent strength and corrosion resistance, which is critical for electronics enclosures, automotive trim, and outdoor equipment where durability is paramount. The combination of a Phillips pan head and a blunt tip ensures a flush finish and prevents damage to the plastic substrate, streamlining high-volume assembly lines and reducing the risk of product failure.

Specification Summary & Compliance

This screw conforms to a 0.086" thread diameter with 28 threads per inch (TPI) and a unified thread forming (TRS) standard. The 3/8" length is fully threaded for maximum engagement. It is manufactured to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to strict international environmental and safety standards for hazardous substances.

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