S-96452A110 4-40 x 1/2" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws

Steel Button Head Torx Plus Screws

0157FA00048 Steel Button Head Torx Plus Screws
0157FA00048 Steel Button Head Torx Plus Screws

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

Part No.
Part No. 0157FA00048
Equivalent to mcmaster :
96452A110

Basic Information

System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.213"
Head Height 0.059"
Rounded Head Profile Standard
Rounded Head Style Button

Dimensions

Length 1/2"

Thread Parameters

Thread Type UNC
Thread Size 4-40
Thread Diameter 0.112"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Torx Plus
Drive Size IP8, T8

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C39
Tensile Strength 120000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3, ASTM F835
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 Black-Oxide coating, extending service life in demanding industrial environments
  • Enhanced torque transmission through Torx Plus IP8 drive system, reducing cam-out and tool wear
  • Precise Class 3A thread fit ensures secure fastening with minimal cross-threading risk in assembly operations
  • High tensile strength (120,000 psi) provides reliable performance under extreme mechanical stress
  • Rockwell C39 hardness maintains structural integrity through repeated installation cycles
  • Full threading along 1/2" length offers maximum grip range for versatile application requirements
  • Low-profile rounded button head combines sleek aesthetics with practical clearance advantages

Professional Applications & Engineering Value

These 4-40 UNC Torx Plus screws deliver critical advantages for precision assembly applications where vibration resistance and consistent clamp load are paramount. The Black-Oxide Alloy Steel construction provides essential protection against environmental degradation in automotive, aerospace, and electronic enclosure applications. The Torx Plus T8 drive system addresses common installation challenges by eliminating cam-out incidents that damage fastener heads and compromise joint integrity. With coarse thread spacing and Class 3A thread fit, these fasteners ensure rapid assembly while maintaining precision alignment in high-volume manufacturing environments. The combination of 120,000 psi tensile strength and fully threaded design makes them ideal for applications requiring uniform stress distribution across the entire engagement length.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread tolerances for precision fit. Features UNC coarse threads with right-hand orientation and full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The Rockwell C39 hardness rating and 120,000 psi tensile strength meet rigorous industrial standards for mechanical performance and reliability.

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