S-94705A771 3/4"-10 x 6" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Steel Heavy Hex Head Screws for High-Pressure Applications

0264FA00078 Steel Heavy Hex Head Screws for High-Pressure Applications
0264FA00078 Steel Heavy Hex Head Screws for High-Pressure Applications

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Part No.
Part No. 0264FA00078
Equivalent to mcmaster :
94705A771

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 1 1/4"
Head Height 15/32"

Dimensions

Length 6"
Grip Length 4 1/4"

Thread Parameters

Thread Type UNC
Thread Size 3/4"-10
Thread Diameter 0.75"
Thread Spacing Coarse
Thread Length 1 3/4"
Thread Direction Right Hand
Thread Fit Class 2A
Threading Partially Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material Steel
Hardness Rockwell C35
Fastener Strength Grade/Class ASTM Grade B7
Tensile Strength 125000 psi

Temperature & Environment

Specifications Met ASTM A193
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 125,000 psi ensures reliable performance in high-stress industrial and construction applications.
  • ASTM Grade B7 steel construction provides superior durability and resistance to heavy loads and harsh environments.
  • Rockwell C35 hardness offers excellent wear resistance and maintains structural integrity under repeated use.
  • Partially threaded design with coarse UNC spacing allows for faster installation and secure fastening in demanding assemblies.
  • Class 2A thread fit ensures smooth, precise engagement with nuts and tapped holes, reducing assembly time and risk of cross-threading.
  • External hex drive and standard hex head enable easy installation and removal with common tools, improving workflow efficiency.
  • 6" length with 4 1/4" grip length provides versatile clamping capability for a wide range of material thicknesses.

Professional Applications & Engineering Value

This 3/4"-10 UNC Grade B7 steel hex head screw is engineered to address critical challenges in heavy-duty industrial and construction settings. The ASTM A193 compliant high-strength steel and coarse thread design deliver reliable performance in high-vibration environments, preventing loosening and maintaining joint integrity. The partially threaded configuration concentrates strength where needed most, reducing stress concentration and improving fatigue resistance. With its external hex drive and Class 2A thread fit, it ensures quick, secure installation in pressure vessels, structural connections, and machinery assemblies where 125,000 psi tensile strength and consistent performance are non-negotiable requirements for engineering safety and operational efficiency.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with 3/4"-10 UNC coarse threads and partial threading over 1 3/4". Manufactured to ASTM A193 specifications using Grade B7 steel with Rockwell C35 hardness and 125,000 psi tensile strength. Dimensions include 6" length, 1 1/4" head width, and 15/32" head height in inch system measurements. Compliant with industry standards for heavy-duty fastening applications requiring verified material properties and dimensional accuracy.

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