S-93880A544 Length 1 1/4" Tapping Screws

Tapping Screws

0451FA00020 Tapping Screws
0451FA00020 Tapping Screws

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

Part No.
Part No. 0451FA00020
Equivalent to mcmaster :
93880A544

Basic Information

Tapping Screw Type B
Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 3/8"
Head Height 0.24"

Dimensions

Length 1 1/4"
Flange Diameter 0.52"
Shank Cross Section Round

Thread Parameters

Screw Size 1/4"
Thread Diameter 0.25"
Approximate Threads per Inch 14
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style External Hex/Slotted
Drill Bit Size 5.5 mm
Drill Bit Diameter 0.2165"
Tapping Method Thread Forming

Material & Strength

Material Zinc-Plated Steel

Temperature & Environment

For Use In Sheet Metal
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 zinc-plated steel construction, extending service life in demanding industrial environments
  • Enhanced torque transmission through external hex drive design, preventing stripping during high-torque installation
  • Optimal load distribution with 0.52" flange diameter, reducing surface pressure and preventing material deformation
  • Reliable thread formation in sheet metal applications without requiring pre-tapped holes, streamlining installation processes
  • Full-length threading ensures maximum grip along the entire 1-1/4" length, providing superior pull-out resistance
  • Precision compatibility with standard 5.5mm drill bits, eliminating guesswork and ensuring proper hole preparation
  • Right-hand thread design conforms to industry standards for straightforward installation using common tools

Professional Applications & Engineering Value

These zinc-plated steel hex flange tapping screws deliver exceptional performance in sheet metal assembly applications where vibration resistance and structural integrity are paramount. The thread forming design creates strong, permanent threads in base materials without generating chips, eliminating contamination concerns in sensitive environments. The combination of external hex drive and flange configuration provides dual benefits: superior torque transfer during installation and increased bearing surface to prevent pull-through in thin-gauge materials. Engineered specifically for Type B thread forming applications, these fully threaded screws maintain consistent clamping force across the entire engagement length, making them ideal for HVAC systems, electrical enclosures, and industrial equipment where reliable fastening is critical.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread tolerances for consistent performance. These thread forming tapping screws comply with industry-standard Type B specifications for sheet metal applications. The zinc-plated finish provides corrosion protection while meeting RoHS and REACH compliance requirements. Engineered with right-hand threads measuring 1/4"-14 thread pitch and fully threaded along the 1-1/4" length, ensuring reliable performance in demanding industrial fastening scenarios.

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