S-97595A566 6-32 x 1/4" ASME B18.3 Brass Hex Drive Flat Head Screws

Brass Hex Drive Flat Head Screws

0318FA00043 Brass Hex Drive Flat Head Screws
0318FA00043 Brass Hex Drive Flat Head Screws

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Part No.
Part No. 0318FA00043
Equivalent to mcmaster :
97595A566

Basic Information

System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.263"
Head Height 0.097"
Flat Head Profile Standard

Dimensions

Length 1/4"

Thread Parameters

Thread Type UNC
Thread Size 6-32
Thread Diameter 0.138"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 5/64"
Countersink Angle 82°

Material & Strength

Material Brass
Hardness Rockwell B55
Tensile Strength 50000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance from high-quality brass material, ideal for humid or demanding industrial environments.
  • Precise, reliable fastening with Class 3A thread fit, ensuring tight tolerances and reduced risk of loosening.
  • High tensile strength of 50,000 psi provides dependable holding power for critical assembly applications.
  • Durable construction with Rockwell B55 hardness offers excellent wear resistance and long service life.
  • Easy installation and removal with a 5/64" hex drive, allowing for efficient tool engagement.
  • Standard 82° countersink angle enables a flush, secure fit in prepared surfaces for a clean finish.
  • Full threading along the 1/4" length ensures maximum grip and uniform load distribution.

Professional Applications & Engineering Value

This 6-32 UNC brass flat head screw is engineered to address common challenges in electrical, marine, and plumbing systems where corrosion resistance and reliable fastening are critical. The coarse UNC thread and Class 3A thread fit provide excellent engagement in softer materials or pre-tapped holes, reducing cross-threading risks. Made from durable brass, it withstands oxidation and galvanic corrosion, making it suitable for assemblies exposed to moisture or chemicals. The flat head design with a standard 82° countersink ensures a smooth, flush installation, preventing protrusions in confined spaces. These features make it an optimal choice for industrial fasteners in equipment requiring consistent performance and minimal maintenance.

Specification Summary & Compliance

This screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional accuracy in inch measurements. It is fully threaded with a right-hand UNC coarse thread and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence for global supply chains.

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