S-95638A323 Length 5/8" Tapping Screws

Tapping Screws

0419FA00021 Tapping Screws
0419FA00021 Tapping Screws

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

Part No.
Part No. 0419FA00021
Equivalent to mcmaster :
95638A323

Basic Information

Tapping Screw Type A/AB
System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.206"
Head Height 0.055"
Rounded Head Profile Standard
Rounded Head Style Button

Dimensions

Length 5/8"
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 Tamper-Resistant Torx
Drive Size T8
Drill Bit Size 3/32"
Drill Bit Diameter 0.0938"
Tapping Method Thread Forming

Material & Strength

Material 18-8 Stainless Steel

Temperature & Environment

For Use In Sheet Metal

Installation & Application

Maximum Drilling Thickness 0.025"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Tamper-resistant T8 Torx drive prevents unauthorized removal, enhancing security in sensitive industrial environments
  • 18-8 stainless steel construction delivers excellent corrosion resistance for long-lasting performance in harsh conditions
  • Thread forming design creates strong, permanent threads in sheet metal without chips or debris
  • Fully threaded shank ensures maximum grip length and superior holding power throughout the entire fastener
  • Pointed tip design enables quick, self-starting installation without pre-drilling in many applications
  • Precision sizing compatibility with 3/32" drill bits for 0.025" maximum drilling thickness in sheet metal
  • Rounded button head profile provides a finished appearance while minimizing snagging hazards

Professional Applications & Engineering Value

These No. 4-24 thread forming screws are specifically engineered for demanding sheet metal applications where security and durability are paramount. The 18-8 stainless steel composition offers exceptional corrosion resistance, making these tamper-resistant Torx screws ideal for outdoor equipment, electrical enclosures, and HVAC systems exposed to moisture and environmental elements. The A/AB tapping screw type with thread forming capability creates stronger thread engagement than cutting screws, eliminating loose metal chips that could compromise electrical components or moving parts. The combination of T8 drive security and fully threaded design ensures both vandal-resistant protection and maximum pull-out strength in thin gauge materials, solving critical fastening challenges in commercial and industrial settings.

Specification Summary & Compliance

These precision-engineered fasteners feature No. 4 screw size with 0.112" thread diameter and 24 threads per inch in right-hand thread direction. The 5/8" length and fully threaded configuration meet industry standards for sheet metal fasteners, with compatibility for 3/32" (0.0938") drill bits and 0.025" maximum drilling thickness. Manufactured to A/AB tapping screw type specifications with Class 2A thread tolerances, these screws comply with industry standards for mechanical fasteners and contain materials that meet RoHS and REACH environmental compliance requirements.

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