S-91255A622 3/8"-16 x 3/4" ASTM F835 Steel Button Head Hex-Drive Screws

Steel Button Head Hex-Drive Screws

0081FA00248 Steel Button Head Hex-Drive Screws
0081FA00248 Steel Button Head Hex-Drive Screws

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

Part No.
Part No. 0081FA00248
Equivalent to mcmaster :
91255A622

Basic Information

System of Measurement Inch

Head Parameters

Head Type Rounded
Head Diameter 0.656"
Head Height 0.199"
Rounded Head Profile Standard
Rounded Head Style Button

Dimensions

Length 3/4"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
Thread Diameter 0.375"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 7/32"

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
Specifications Met 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

  • Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
  • Class 3A thread fit provides tighter tolerances for superior thread engagement and vibration resistance in precision assemblies.
  • Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish for long-term use.
  • Hex drive design (7/32") allows for easy installation and high torque application with standard tools, speeding up assembly processes.
  • Fully threaded UNC coarse spacing enables quick insertion and strong holding power in a variety of materials.
  • Rounded button head profile combines a low-profile, aesthetically pleasing finish with reduced risk of snagging in confined spaces.
  • Compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex drive button head screw is engineered from black-oxide alloy steel to address common industrial challenges such as corrosion, vibration loosening, and high mechanical stress. Its Rockwell C39 hardness and 120,000 psi tensile strength make it ideal for heavy-duty applications in machinery, automotive assemblies, and construction equipment, where durability is critical. The fully threaded coarse spacing ensures rapid installation and robust clamping force, while the rounded head design minimizes protrusion in tight spaces. By meeting ASME B18.3 and ASTM F835 specifications, it provides reliable performance in demanding environments, reducing maintenance needs and enhancing operational efficiency for B2B clients.

Specification Summary & Compliance

This fastener features a Class 3A thread fit for precise tolerance, UNC coarse thread with a size of 3/8"-16, and dimensions including a 3/4" length and 7/32" hex drive. It is manufactured in compliance with ASME B18.3 and ASTM F835 standards, and is verified as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets environmental and safety regulations for industrial use.

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