S-92703A411 1/4"-20 x 1" ASME B18.3 Stainless Steel Torx Flat Head Screws

Stainless Steel Torx Flat Head Screws

0340FA00046 Stainless Steel Torx Flat Head Screws
0340FA00046 Stainless Steel Torx Flat Head Screws

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Part No.
Part No. 0340FA00046
Equivalent to mcmaster :
92703A411

Basic Information

System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.477"
Head Height 0.153"
Flat Head Profile Standard

Dimensions

Length 1"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Torx Plus
Drive Size IP27, T27
Countersink Angle 82°

Material & Strength

Material 18-8 Stainless Steel
Finish Passivated
Hardness Rockwell B70
Tensile Strength 60000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
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 and passivated finish, ideal for harsh environments and long-term reliability.
  • Enhanced torque transmission and reduced tool slippage via the Torx Plus IP27 drive, ensuring efficient installation and minimizing damage.
  • High mechanical strength offering 60,000 psi tensile strength and Rockwell B70 hardness for dependable performance under load.
  • Precise flush mounting with a standard flat head and 82° countersink angle, providing a smooth surface finish.
  • Reliable thread engagement with UNC coarse threads and Class 2A fit, facilitating quick assembly and vibration resistance.
  • Full compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
  • Versatile 1-inch fully threaded design for consistent holding power across various material thicknesses.

Professional Applications & Engineering Value

This 1/4-20 UNC flat head screw is engineered to address critical industrial challenges, such as corrosion in moist or chemical-exposed settings. Made from 18-8 Stainless Steel with a passivated finish, it significantly extends service life by resisting rust and degradation. The Torx Plus IP27 drive minimizes cam-out, allowing for higher torque application without stripping—ideal for precision assemblies in machinery, electronics, and automotive sectors. Its flat head profile and coarse UNC threads ensure secure, flush installations in metals and composites, reducing the risk of snagging and improving aesthetic integration. By combining durability with ease of use, these screws enhance productivity and reduce maintenance in demanding industrial applications.

Specification Summary & Compliance

The screw features precise Class 2A thread fit and UNC coarse thread spacing for consistent performance. It adheres to ASME B18.3 manufacturing standards, ensuring dimensional accuracy and reliability. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industries without hazardous substances.

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