S-93848A144 Length 1 1/2" Tapping Screws

Tapping Screws

0474FA00023 Tapping Screws
0474FA00023 Tapping Screws

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

Part No.
Part No. 0474FA00023
Equivalent to mcmaster :
93848A144

Basic Information

Tapping Screw Type BSD
System of Measurement Inch

Head Parameters

Head Type Oval
Head Diameter 0.312"
Head Height 0.152"
Oval Head Profile Standard
Oval Top Height 0.091"

Dimensions

Length 1 1/2"
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 Drilling
Drive Style Phillips
Drive Size No. 2
Drill Tip Type No. 2
Drill Tip Length 7/32"
Countersink Angle 82°
Tapping Method Thread Forming

Material & Strength

Material Black-Oxide Steel

Temperature & Environment

For Use In Steel, Sheet Metal
REACH Compliant
RoHS Compliant

Installation & Application

Maximum Drilling Thickness 0.1"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Self-drilling capability with No. 2 drill tip eliminates pre-drilling, reducing installation time and labor costs
  • Superior corrosion resistance from Black Oxide Steel finish extends service life in demanding industrial environments
  • Optimized thread forming design creates strong, permanent threads in steel and sheet metal without tapping operations
  • Full threading along 1-1/2" length ensures maximum grip and load distribution across the entire fastened joint
  • Oval head with Phillips No. 2 drive provides secure installation while maintaining a flush, professional appearance
  • High-strength BSD construction delivers reliable performance in structural applications up to 0.1" material thickness
  • Compliance with international standards including RoHS 3 and REACH ensures environmental responsibility and global acceptance

Professional Applications & Engineering Value

These Black Oxide Steel tapping screws are engineered specifically for steel and sheet metal applications where drilling and fastening operations need to be combined for efficiency. The thread forming BSD design creates precise mating threads in parent material without removing material, resulting in stronger connections than conventional tapping screws. The specialized No. 2 drill tip penetrates up to 0.1" thickness while the fully threaded No. 8 diameter (0.164") with 18 TPI provides excellent pull-out resistance. The oval head profile sits flush with surfaces, making these Phillips drive screws ideal for HVAC systems, metal framing, electrical enclosures, and industrial equipment where vibration resistance and professional finish are critical requirements.

Specification Summary & Compliance

Manufactured to precise thread forming standards with right-hand threading and standard oval head profile. Features include: 0.164" thread diameter, 18 threads per inch, 1-1/2" fully threaded length, No. 2 Phillips drive, and 82° countersink angle. These BSD tapping screws comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet international requirements for hazardous substance restrictions and chemical safety in industrial applications.

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