S-94414A263 10-32 x 1/2" ASME B18.3, ASTM F835 Alloy Steel Torx Flat Head Screws

Alloy Steel Torx Flat Head Screws

0338FA00020 Alloy Steel Torx Flat Head Screws
0338FA00020 Alloy Steel Torx Flat Head Screws

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Part No.
Part No. 0338FA00020
Equivalent to mcmaster :
94414A263

Basic Information

System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.411"
Head Height 0.127"
Flat Head Profile Standard

Dimensions

Length 1/2"

Thread Parameters

Thread Type UNF
Thread Size 10-32
Thread Diameter 0.19"
Thread Spacing Fine
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Torx Plus
Drive Size IP25, T25
Countersink Angle 82°

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C39
Tensile Strength 140000 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 torque transmission and reduced cam-out with the Torx Plus IP25 drive, ensuring reliable fastening in high-stress applications.
  • Exceptional tensile strength and durability from the alloy steel construction, rated at 140,000 psi to withstand heavy loads and vibrations.
  • Enhanced corrosion resistance provided by the black-oxide finish, extending the screw's service life in demanding industrial environments.
  • Precise and secure thread engagement with a Class 3A fit and UNF fine thread, minimizing the risk of stripping and ensuring consistent clamping force.
  • Flush and clean installation thanks to the standard flat head with an 82° countersink angle, ideal for applications where a smooth surface is critical.
  • Full threading for maximum grip along the entire 1/2" length, providing versatile holding power in various material thicknesses.
  • Guaranteed compliance and reliability by meeting ASME B18.3, RoHS 3, and REACH standards, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 10-32 UNF flat head screw is engineered to address critical challenges in precision assembly and heavy-duty applications. The black-oxide alloy steel construction, combined with a Rockwell C39 hardness, provides excellent resistance to wear and fatigue, making it ideal for machinery, automotive, and aerospace components where failure is not an option. The Torx Plus drive (IP25) offers superior torque transfer compared to traditional drives, reducing tool slippage and damage in high-torque scenarios. Its fully threaded design and Class 3A thread fit ensure tight, reliable connections in metals and engineered plastics, while the 82° countersink angle allows for a seamless finish in countersunk holes. These features collectively enhance assembly efficiency, reduce maintenance needs, and improve the longevity of the final product.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including a Class 3A thread fit for high precision and a UNF (Unified National Fine) 10-32 thread with fine spacing. Manufacturing and quality are governed by ASME B18.3 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and international markets.

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