S-90380A242 Length 1/2" Tapping Screws

Tapping Screws

0505FA00027 Tapping Screws
0505FA00027 Tapping Screws

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

Part No.
Part No. 0505FA00027
Equivalent to mcmaster :
90380A242

Basic Information

Tapping Screw Type TRS
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.373"
Head Height 0.133"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 1/2"
Shank Cross Section Tri-Lobe

Thread Parameters

Screw Size No. 10
Thread Diameter 0.19"
Approximate Threads per Inch 14
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style Phillips
Drive Size No. 2
Drill Bit Size No. 15
Drill Bit Diameter 0.18"
Tapping Method Thread Forming

Material & Strength

Material Zinc-Plated 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 holding power in plastic materials due to the advanced TRS thread forming design that creates strong, permanent threads without chipping or cracking the substrate.
  • Excellent corrosion resistance provided by the zinc-plated steel construction, ensuring long-term durability and reliability in various industrial environments.
  • Efficient and secure installation with the Phillips No. 2 drive, offering good torque transfer and reducing the risk of cam-out during assembly.
  • Enhanced thread engagement and vibration resistance from the Tri-Lobe shank cross-section, which helps prevent loosening under dynamic loads.
  • Reliable performance in plastic fastening as the thread forming tapping method and blunt tip allow for easy starting and consistent thread formation without pre-drilling in many cases.
  • Wide compatibility and precise fit with standard No. 10 size, 1/2" length, and 14 TPI thread pitch, meeting common industrial requirements for plastic assemblies.
  • Safe for regulated industries with full compliance to RoHS 3 and REACH environmental standards, ensuring no hazardous substances are used.

Professional Applications & Engineering Value

These No. 10 x 1/2" zinc-plated steel TRS tapping screws are specifically engineered for plastic applications, where traditional fasteners often fail due to material brittleness or poor thread retention. The thread forming technology, combined with a Tri-Lobe shank design, displaces plastic material to create strong, load-bearing threads that resist back-out and vibration—common issues in automotive trim, electronic enclosures, and consumer goods assembly. The zinc-plated finish adds a protective layer against moisture and chemicals, extending service life in harsh conditions. With a Phillips drive for efficient installation and a standard pan head for a low-profile hold, these screws reduce assembly time and improve product integrity, making them a reliable choice for engineers seeking durable fastening solutions in plastic components.

Specification Summary & Compliance

This product adheres to standard inch measurements with a thread diameter of 0.19" and length of 1/2", featuring a fully threaded design with 14 TPI for consistent engagement. The thread forming (tapping) method and TRS type ensure compatibility with plastic materials, requiring no pre-tapped holes. Manufacturing and material standards are supported by compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for safe industrial use.

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