S-93880A546 Length 1 1/2" Tapping Screws

Tapping Screws

0451FA00021 Tapping Screws
0451FA00021 Tapping Screws

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

Part No.
Part No. 0451FA00021
Equivalent to mcmaster :
93880A546

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 1/2"
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
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 zinc-plated steel construction for extended service life in demanding industrial environments
  • Enhanced torque transmission through external hex/slotted drive design, preventing tool slippage during installation
  • Eliminates need for separate washers with integrated flange design that provides superior load distribution across sheet metal surfaces
  • Reliable thread-forming capability with Type B tapping design that creates strong, permanent threads in sheet metal without pre-tapping
  • Full-length threading ensures maximum grip strength and uniform stress distribution along the entire fastener length
  • Optimized for 5.5mm drill bits with precise dimensional specifications for quick, accurate installation in sheet metal applications
  • Compliance with environmental standards through RoHS 3 certification, meeting strict industrial safety requirements

Professional Applications & Engineering Value

These 1/4"-14 thread forming tapping screws are specifically engineered to address common challenges in sheet metal fabrication and assembly. The zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength for demanding applications. The hex flange design eliminates the need for separate washers, reducing installation time and component count while providing superior clamping force distribution. As Type B thread forming screws, they create precise mating threads in sheet metal without chip formation, preventing contamination in sensitive assemblies. The combination of external hex/slotted drive offers flexibility for both power and manual tool applications, while the fully threaded blunt tip design ensures maximum engagement strength in materials ranging from light to heavy-gauge sheet metal.

Specification Summary & Compliance

This 1/4"-14 tapping screw features precise Class 2A thread tolerances with 14 threads per inch and 0.25" thread diameter. The 1 1/2" length with 0.52" flange diameter and external hex/slotted drive meets industry standards for thread forming applications. Manufactured from high-strength steel with zinc plating for corrosion resistance, these screws are fully compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring they meet the latest industrial safety and material restriction standards for global manufacturing applications.

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