S-90128A198 8-32 x 7/8" ASTM A574 Alloy Steel Socket Head Screws

Alloy Steel Socket Head Screws

0009FA00322 Alloy Steel Socket Head Screws
0009FA00322 Alloy Steel Socket Head Screws

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Part No.
Part No. 0009FA00322
Equivalent to mcmaster :
90128A198

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 0.27"
Head Height 0.164"
Socket Head Profile Standard

Dimensions

Length 7/8"

Thread Parameters

Thread Type UNC
Thread Size 8-32
Thread Diameter 0.164"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 9/64"

Material & Strength

Material Zinc-Plated Alloy Steel
Hardness Rockwell C37
Tensile Strength 170000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASTM A574
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
  • Zinc-plated alloy steel construction provides superior corrosion resistance, extending service life in harsh environments.
  • Class 3A thread fit offers tighter tolerances for precise assembly and improved vibration resistance in machinery.
  • Hex socket drive design allows for high torque application and easy installation in confined spaces.
  • Rockwell C37 hardness ensures excellent wear resistance and durability under repetitive loads.
  • Full compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chains.
  • Coarse UNC threading enables quick assembly and disassembly, saving time in maintenance and production cycles.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 8-32 UNC thread socket head cap screw addresses critical needs for strength and reliability. The zinc-plated alloy steel material combats corrosion in outdoor or chemically exposed environments, while the Class 3A thread fit and coarse thread spacing ensure secure fastening in vibrating equipment like motors, conveyors, and heavy machinery. Its hex drive socket head design facilitates installation in tight spaces, making it ideal for precision assemblies in aerospace, automotive, and manufacturing sectors where high tensile strength and compliance with ASTM A574 are non-negotiable for safety and performance.

Specification Summary & Compliance

This socket head cap screw features precise Class 3A thread fit per UNC standards, with a thread size of 8-32 and length of 7/8". It meets ASTM A574 specifications for high-strength fasteners, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible procurement and use in global markets.

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