S-93945A007 Length 1 1/4" Tapping Screws

Tapping Screws

0431FA00004 Tapping Screws
0431FA00004 Tapping Screws

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

Part No.
Part No. 0431FA00004
Equivalent to mcmaster :
93945A007

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 1/4"
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 Square
Drive Size No. 1
Drill Bit Size No. 32
Drill Bit Diameter 0.116"
Countersink Angle 82°
Tapping Method Thread Forming

Material & Strength

Material 18-8 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 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
  • High-strength thread forming design creates secure, permanent threads in sheet metal without pre-tapped holes, reducing assembly time and tooling costs.
  • Optimized flat head with 82° countersink provides a flush, professional finish that minimizes snagging and improves aerodynamic surfaces.
  • Square drive system offers superior torque transmission compared to Phillips, reducing cam-out and driver slippage during installation.
  • Full threading along the 1-1/4" length ensures maximum grip and uniform stress distribution across the entire fastened joint.
  • Precise No. 32 drill bit compatibility (0.116" diameter) simplifies hole preparation and guarantees consistent performance with 0.025" maximum material thickness.
  • Compliance with RoHS 3 and REACH regulations makes these screws suitable for global supply chains and environmentally sensitive applications.

Professional Applications & Engineering Value

These No. 6-18 thread forming screws are engineered specifically for sheet metal applications where reliability and corrosion resistance are critical. The 18-8 stainless steel material provides excellent durability against oxidation and chemical exposure, making these tapping screws ideal for outdoor equipment, HVAC systems, and electronic enclosures. The A/AB tapping screw type with right-hand threading forms strong, clean threads in ductile materials without creating chips, eliminating the risk of electrical short circuits in sensitive assemblies. The combination of square drive and standard flat head profile ensures secure installation with common industrial drivers while maintaining a low-profile finish that meets aesthetic and safety requirements in manufactured products.

Specification Summary & Compliance

This No. 6-18 x 1-1/4" tapping screw features standard inch measurements with fully threaded design and 0.138" thread diameter at 18 threads per inch. Manufacturing follows industry-standard thread forming specifications for A/AB type screws. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they meet international environmental and safety standards for industrial components.

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