S-92240A774 5/8"-11 x 2 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

18-8 Stainless Steel Hex Head Screws

0244FA00842 18-8 Stainless Steel Hex Head Screws
0244FA00842 18-8 Stainless Steel Hex Head Screws

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

Part No.
Part No. 0244FA00842
Equivalent to mcmaster :
92240A774

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 15/16"
Head Height 25/64"

Dimensions

Length 2 1/2"

Thread Parameters

Thread Type UNC
Thread Size 5/8"-11
Thread Diameter 0.625"
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 thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
  • High tensile strength of 80,000 psi provides superior load-bearing capacity for demanding heavy-duty applications.
  • Rockwell B70 hardness offers excellent durability and resistance to wear and deformation.
  • Fully threaded UNC coarse spacing delivers faster installation and a more secure, vibration-resistant grip.
  • External hex drive and hex head design allows for easy and secure tightening with standard tools.
  • Class 2A thread fit ensures consistent, reliable performance and ease of assembly.
  • Compliance with major industry standards including ASME B18.2.1, guaranteeing dimensional accuracy and interchangeability.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Hex Head Screw is engineered to solve critical challenges in industrial fastening. Its high tensile strength (80,000 psi) and Rockwell B70 hardness make it ideal for structural applications, machinery assembly, and heavy equipment where failure is not an option. The corrosion-resistant properties of the material prevent degradation in outdoor, marine, or chemical-exposed environments, significantly reducing maintenance costs and downtime. The UNC coarse thread and fully threaded design provide maximum engagement and holding power, even in materials prone to vibration loosening. This combination of material excellence and precise ASME B18.2.1 compliant manufacturing delivers a reliable, long-lasting heavy-duty fastener that enhances the integrity and safety of your projects.

Specification Summary & Compliance

This screw features a 5/8"-11 UNC thread with a Class 2A fit, ensuring standard dimensional accuracy and interchangeability. It is manufactured in compliance with the ASME B18.2.1 standard for hex cap screws. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.

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