S-90055A296 Length 5/8" Tapping Screws

Tapping Screws

0449FA00012 Tapping Screws
0449FA00012 Tapping Screws

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

Part No.
Part No. 0449FA00012
Equivalent to mcmaster :
90055A296

Basic Information

Tapping Screw Type B
System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.312"
Head Height 0.1"
Flat Head Profile Standard

Dimensions

Length 5/8"
Shank Cross Section Round

Thread Parameters

Screw Size No. 8
Thread Diameter 0.164"
Approximate Threads per Inch 18
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style Phillips
Drive Size No. 2
Drill Bit Size No. 29
Drill Bit Diameter 0.136"
Countersink Angle 82°
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, ensuring long-lasting performance in demanding industrial environments
  • Effortless installation with Phillips No. 2 drive and standard flat head profile, reducing tool slippage and assembly time
  • Exceptional holding power through thread forming technology that creates strong, permanent threads in sheet metal without pre-tapping
  • Precision fit and flush mounting with 82° countersink angle and 0.312" head diameter for seamless integration into metal surfaces
  • Optimized drilling compatibility with No. 29 drill bit (0.136" diameter) specifications, eliminating guesswork in preparation
  • Full-length threading provides consistent grip along the entire 5/8" length for maximum fastening security
  • Environmental compliance assurance with RoHS 3 certification for use in regulated industries and global markets

Professional Applications & Engineering Value

These Type B thread forming screws are specifically engineered to solve common challenges in sheet metal assembly operations. The zinc-plated steel construction provides essential corrosion protection while maintaining the strength required for metal-to-metal fastening. The thread forming design eliminates the need for separate tapping operations, as the screw creates precisely mated threads that resist vibration loosening and provide superior pull-out resistance. With fully threaded coverage and blunt tip configuration, these No. 8-18 TPI screws ensure consistent engagement depth and prevent material splitting in thin-gauge metals. The Phillips flat head design with standard profile allows for flush installation in countersunk holes, creating smooth finished surfaces ideal for applications where protrusions are unacceptable.

Specification Summary & Compliance

This No. 8-18 x 5/8" tapping screw features inch system measurements with right-hand threads and round shank cross-section. Manufactured to precise dimensional standards with 0.312" head diameter and 0.1" head height for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across various industrial applications. Designed for use with No. 29 drill bits (0.136" diameter) and features an 82° countersink angle for proper seating in prepared holes.

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