S-95639A301 Length 3/8" Tapping Screws

Tapping Screws

0433FA00001 Tapping Screws
0433FA00001 Tapping Screws

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

Part No.
Part No. 0433FA00001
Equivalent to mcmaster :
95639A301

Basic Information

Tapping Screw Type A/AB
System of Measurement Inch

Head Parameters

Head Type Oval
Head Diameter 0.212"
Head Height 0.104"
Oval Head Profile Standard
Oval Top Height 0.037"

Dimensions

Length 3/8"
Shank Cross Section Round

Thread Parameters

Screw Size No. 4
Thread Diameter 0.112"
Approximate Threads per Inch 24
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Pointed
Drive Style Phillips
Drive Size No. 1
Drill Bit Size No. 44
Drill Bit Diameter 0.086"
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, permanent threads in sheet metal without chip removal, reducing installation time
  • Precision oval head profile provides a flush, finished appearance while the Phillips drive ensures secure tool engagement
  • Full threading with 24 TPI precision delivers maximum grip strength and uniform load distribution across the entire fastener length
  • Optimized for No. 44 drill bit compatibility ensures proper hole sizing for reliable performance in sheet metal up to 0.025" thickness
  • Comprehensive regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industrial applications
  • Right-hand threading with pointed tip facilitates easy starting and smooth installation in various metalworking scenarios

Professional Applications & Engineering Value

These 316 stainless steel tapping screws deliver exceptional performance in sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming design eliminates the need for tapping operations, creating strong, reliable threads that resist vibration loosening in thin-gauge materials. The Phillips oval head combines aesthetic appeal with functional design, sitting flush with surfaces while providing ample drive torque. Engineered for industrial fastening in HVAC systems, electronic enclosures, and metal fabrication, these screws maintain their mechanical properties even in chemically aggressive environments. The precise 24 TPI threading and No. 44 drill bit specification ensure consistent performance across production runs, reducing assembly errors and improving manufacturing efficiency.

Specification Summary & Compliance

These No. 4 x 3/8" tapping screws feature standard Class 2A thread tolerances with A/AB tapping screw type specifications. The fully threaded design with 24 threads per inch precision ensures reliable performance in sheet metal applications requiring No. 44 drill bit (0.086" diameter) preparation. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to international environmental and safety standards for industrial components.

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