S-91655A197 Length 3/4" Tapping Screws

Tapping Screws

0425FA00003 Tapping Screws
0425FA00003 Tapping Screws

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

Part No.
Part No. 0425FA00003
Equivalent to mcmaster :
91655A197

Basic Information

Tapping Screw Type A/AB
Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Height 0.113"
Rounded Head Profile Standard
Rounded Head Style Pan

Dimensions

Length 3/4"
Flange Diameter 0.361"
Shank Cross Section Round

Thread Parameters

Screw Size No. 8
Thread Diameter 0.164"
Approximate Threads per Inch 15
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Pointed
Drive Style Square
Drive Size No. 2
Drill Bit Size No. 29
Drill Bit Diameter 0.136"
Tapping Method Thread Forming

Material & Strength

Material Zinc-Plated Steel

Temperature & Environment

For Use In Sheet Metal

Installation & Application

Maximum Drilling Thickness 0.025"
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 material displacement through thread forming design creates stronger, more secure connections in sheet metal applications
  • Optimized installation efficiency with No. 2 square drive that prevents cam-out and ensures reliable torque transmission
  • Increased bearing surface from flanged pan head design distributes clamping force evenly, reducing material stress
  • Precision compatibility with No. 29 drill bit (0.136" diameter) for clean, accurate installations in up to 0.025" thick materials
  • Maximum thread engagement with fully threaded design provides consistent holding power along the entire 3/4" length
  • Industry-standard compliance with A/AB tapping screw specifications ensures reliable performance and interchangeability

Professional Applications & Engineering Value

These No. 8-15 zinc-plated steel tapping screws deliver exceptional engineering value in sheet metal fabrication and assembly operations. The thread forming design eliminates the need for pre-tapped holes while creating stronger, vibration-resistant connections through material displacement rather than removal. The flanged pan head with No. 2 square drive provides superior torque transmission and prevents stripping during installation. The zinc-plated steel construction offers reliable corrosion protection for industrial environments, while the pointed tip ensures precise alignment and easier starting. These fully threaded screws maintain consistent right-hand threading throughout their length, providing maximum pull-out resistance in sheet metal applications up to 0.025" thickness.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 0.164" thread diameter and 15 threads per inch configuration. Features Class 2A thread tolerances for reliable fit and performance. Complies with industry-standard A/AB tapping screw specifications for thread forming applications. The zinc-plated finish meets corrosion resistance requirements for industrial use, while the material composition adheres to relevant RoHS and REACH compliance standards. Designed for compatibility with No. 29 drill bits (0.136" diameter) and maximum drilling thickness of 0.025" as specified for optimal performance in sheet metal applications.

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