S-90380A289 Length 1 1/4" Tapping Screws

Tapping Screws

0505FA00057 Tapping Screws
0505FA00057 Tapping Screws

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

Part No.
Part No. 0505FA00057
Equivalent to mcmaster :
90380A289

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 1 1/4"
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 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 with TRS thread forming design that creates strong, permanent threads without pre-drilling requirements
  • Enhanced corrosion resistance through zinc-plated steel construction for extended service life in industrial environments
  • Optimized drive efficiency with Phillips No. 2 drive that prevents cam-out and ensures secure installation
  • Maximum material engagement through fully threaded design with 19 TPI for superior pull-out resistance in plastic assemblies
  • Reduced installation torque thanks to tri-lobe shank cross-section that minimizes driving force while maintaining grip strength
  • Reliable performance in plastic applications with blunt tip design that prevents material splitting during installation
  • Industry compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated environments

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional engineering value for plastic assembly applications where traditional fastening methods often fail. The TRS thread forming technology creates permanent, high-strength threads in plastic substrates without generating chips or debris that can compromise assembly integrity. The tri-lobe shank design significantly reduces installation torque while the 19 TPI thread pitch ensures maximum thread engagement for superior resistance to vibration loosening and pull-out forces. Engineered specifically for plastic fastening, these Phillips drive screws eliminate the need for pre-tapped holes, streamlining production processes and reducing assembly costs in automotive, electronics, and industrial equipment manufacturing where reliable plastic-to-component connections are critical.

Specification Summary & Compliance

These No. 6 x 1-1/4" tapping screws feature precise dimensional accuracy with 0.138" thread diameter and 19 threads per inch configuration. Manufactured to TRS thread forming standards with fully threaded tri-lobe shank design for optimal performance in plastic materials. The screws maintain compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.

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