S-90198A147 Length 1/2" Tapping Screws

Tapping Screws

0428FA00012 Tapping Screws
0428FA00012 Tapping Screws

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

Part No.
Part No. 0428FA00012
Equivalent to mcmaster :
90198A147

Basic Information

Tapping Screw Type A/AB
System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.262"
Head Height 0.083"
Flat Head Profile Standard

Dimensions

Length 1/2"
Shank Cross Section Round

Thread Parameters

Screw Size No. 6
Thread Diameter 0.138"
Approximate Threads per Inch 18
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Pointed
Drive Style Phillips
Drive Size No. 2
Drill Bit Size No. 32
Drill Bit Diameter 0.116"
Countersink Angle 82°
Tapping Method Thread Forming

Material & Strength

Material 316 Stainless Steel

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
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications
  • Efficient thread forming design creates strong, durable threads in sheet metal without pre-tapping, reducing installation time and labor costs
  • Precise 82° countersink angle ensures flush mounting with sheet metal surfaces for clean, professional finishes
  • Reliable Phillips No. 2 drive provides secure tool engagement and prevents cam-out during high-torque installation
  • Full threading along the 1/2" length delivers maximum grip and holding power throughout the entire fastener engagement
  • Optimized 18 TPI thread pitch offers excellent pull-out resistance and vibration resistance in thin sheet metal applications
  • Environmental compliance assurance with RoHS 3 and REACH regulations for safe, sustainable industrial use

Professional Applications & Engineering Value

These 316 stainless steel Phillips flat head tapping screws are specifically engineered for sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming design eliminates the need for separate tapping operations, significantly reducing assembly time while creating stronger, more reliable threads that resist vibration loosening. The A/AB tapping screw type with precise 18 TPI threading ensures optimal performance in materials up to 0.025" thickness, making them ideal for HVAC systems, electrical enclosures, automotive panels, and industrial equipment fabrication. The combination of 316 stainless steel material and fully threaded shank provides exceptional durability in corrosive environments while maintaining consistent clamping force across the entire engagement length.

Specification Summary & Compliance

These No. 6 x 1/2" tapping screws feature standard Class 2A thread tolerances with 0.138" thread diameter and 18 TPI precision threading. The manufacturing conforms to standard flat head profile specifications with 82° countersink angle for proper seating in sheet metal applications. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial and commercial use across global markets.

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