S-90286A294 Length 3/4" Tapping Screws

Tapping Screws

0439FA00028 Tapping Screws
0439FA00028 Tapping Screws

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

Part No.
Part No. 0439FA00028
Equivalent to mcmaster :
90286A294

Basic Information

Tapping Screw Type A
Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 0.313"
Head Height 0.194"

Dimensions

Length 3/4"
Flange Diameter 0.432"
Shank Cross Section Round

Thread Parameters

Screw Size No. 12
Thread Diameter 0.216"
Approximate Threads per Inch 11
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Pointed
Drive Style External Hex/Slotted
Drill Bit Size 3/16"
Drill Bit Diameter 0.1875"
Tapping Method Thread Forming

Temperature & Environment

For Use In Sheet Metal
REACH Compliant
RoHS Compliant

Installation & Application

Maximum Drilling Thickness 0.025"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior torque transmission with external hex head design for reliable installation and removal in confined spaces
  • Efficient thread forming action creates strong, permanent threads in sheet metal without chip removal
  • Enhanced load distribution through integrated 0.432" flange that eliminates need for separate washers
  • Quick starting and penetration with fully threaded pointed tip design for faster assembly times
  • Optimized for thin materials with maximum drilling capacity of 0.025" thickness in sheet metal applications
  • Environmental compliance assurance meeting RoHS 3 and REACH standards for industrial safety requirements
  • Secure fastening performance with No. 12-11 thread configuration providing excellent pull-out resistance

Professional Applications & Engineering Value

This thread forming tapping screw delivers exceptional value in sheet metal assembly where traditional fastening methods often fail. The Type A thread forming design displaces material rather than cutting it, creating zero chips and producing stronger, more vibration-resistant threads in thin gauge materials. The combination of fully threaded construction and pointed tip geometry ensures rapid penetration and maximum thread engagement throughout the entire 3/4" length. The external hex drive with slotted option provides versatile installation choices for both power and manual tools, while the integrated flange distributes clamping force over a wider area, preventing material distortion in delicate sheet metal applications. These sheet metal screws are engineered to solve common issues of strip-out, vibration loosening, and material fatigue in HVAC, electronic enclosures, and automotive assembly applications.

Specification Summary & Compliance

This No. 12-11 thread forming tapping screw features precision right-hand threads with 11 threads per inch and 0.216" thread diameter, manufactured to industry-standard tolerances for consistent performance. The screw meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards regarding hazardous substances, ensuring environmental responsibility and workplace safety. Designed specifically for sheet metal applications with recommended 3/16" drill bit size (0.1875" diameter), this flanged hex head screw provides reliable fastening solutions while maintaining regulatory compliance for industrial use.

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