S-95893A237 Length 18 mm Tapping Screws

Tapping Screws

0508FA00128 Tapping Screws
0508FA00128 Tapping Screws

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

Part No.
Part No. 0508FA00128
Equivalent to mcmaster :
95893A237

Basic Information

Tapping Screw Type TRS
System of Measurement Metric

Head Parameters

Head Type Flat
Head Diameter 8.4 mm
Head Height 2.9 mm
Flat Head Profile Standard

Dimensions

Length 18 mm
Shank Cross Section Round

Thread Parameters

Screw Size M4
Approximate Thread Pitch 1.79 mm
Thread Direction Right Hand
Threading Fully Threaded

Tip & Drive Parameters

Tip Type Blunt
Drive Style Torx
Drive Size T20
Drill Bit Size No. 30
Drill Bit Diameter 0.1285"
Countersink Angle 90°
Tapping Method Thread Forming

Material & Strength

Material 18-8 Stainless Steel

Temperature & Environment

For Use In Plastic
REACH Compliant
RoHS Compliant
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, ideal for harsh environments and long-term reliability
  • Enhanced torque transmission through T20 Torx drive, reducing cam-out and tool wear for efficient installation
  • Secure fastening in plastics using TRS thread forming design, creating strong threads without chips or debris
  • Streamlined flush mounting with 90° flat head profile, providing a smooth surface finish in assembled products
  • Full-length threading ensures maximum grip and uniform stress distribution along the entire 18mm length
  • Environmental compliance with RoHS 3 and REACH standards, meeting strict industrial regulatory requirements
  • Precision M4 metric sizing with 1.79mm pitch for consistent performance in standardized plastic components

Professional Applications & Engineering Value

Engineered specifically for plastic assembly applications, this M4 thread forming screw delivers exceptional value in automotive, electronics, and consumer goods manufacturing. The 18-8 stainless steel material provides excellent corrosion resistance, critical for outdoor or high-humidity environments. The TRS thread forming design eliminates tapping operations by displacing material to create strong, permanent threads without generating chips that could damage sensitive components. Combined with the T20 Torx drive system, installers achieve higher torque values with reduced slippage, minimizing assembly time and improving production line efficiency. The flat head profile with 90° countersink ensures clean, flush installations in molded plastic housings and enclosures.

Specification Summary & Compliance

This metric thread forming screw features M4 diameter with 1.79mm pitch and 18mm length, manufactured to precise dimensional standards. The fully threaded design with blunt tip provides consistent engagement in plastic materials. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability. The TRS tapping screw type follows industry-standard thread forming principles for reliable performance in plastic fastening applications.

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