S-92240A238 1/4"-20 x 1 5/8" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

18-8 Stainless Steel Hex Head Screws

0244FA00658 18-8 Stainless Steel Hex Head Screws
0244FA00658 18-8 Stainless Steel Hex Head Screws

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Part No.
Part No. 0244FA00658
Equivalent to mcmaster :
92240A238

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 7/16"
Head Height 5/32"

Dimensions

Length 1 5/8"

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 External Hex

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B70
Tensile Strength 80000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.2.1
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Exceptional corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
  • High tensile strength of 80,000 PSI ensures secure, durable fastening capable of withstanding significant mechanical stress.
  • Rockwell B70 hardness provides excellent wear resistance and prevents thread deformation during installation and use.
  • Full UNC coarse threading offers faster installation and superior grip in a wide range of materials.
  • Class 2A thread fit guarantees consistent, free-spinning assembly with standard nuts for efficient production.
  • External hex drive design allows for high-torque application with common tools, simplifying maintenance and assembly.
  • Comprehensive compliance with ASME B18.2.1, RoHS 3, and REACH ensures material quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This 1/4"-20 UNC Hex Head Screw in 18-8 Stainless Steel is engineered to address critical industrial challenges, including exposure to corrosive elements and the need for reliable, high-strength fastening. The fully threaded design with coarse spacing ensures maximum holding power in soft metals, plastics, and wood, reducing the risk of stripping. Its 80,000 PSI tensile strength and Rockwell B70 hardness make it suitable for heavy-duty applications in machinery, construction, and transportation equipment, where vibration resistance and long-term performance are paramount. The external hex drive facilitates quick installation and removal, enhancing workflow efficiency in maintenance and assembly lines.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with Class 2A fit, ensuring precise dimensional accuracy and interchangeability per ASME B18.2.1 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and adherence to environmental safety requirements for industrial use.

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