S-91263A160 10-32 x 1 1/4" ASME B18.3 Alloy Steel Hex Drive Flat Head Screws

Alloy Steel Hex Drive Flat Head Screws

0309FA00493 Alloy Steel Hex Drive Flat Head Screws
0309FA00493 Alloy Steel Hex Drive Flat Head Screws

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Part No.
Part No. 0309FA00493
Equivalent to mcmaster :
91263A160

Basic Information

System of Measurement Inch

Head Parameters

Head Type Flat
Head Diameter 0.411"
Head Height 0.127"
Flat Head Profile Standard

Dimensions

Length 1 1/4"

Thread Parameters

Thread Type UNF
Thread Size 10-32
Thread Diameter 0.19"
Thread Spacing Fine
Thread Direction Right Hand
Thread Fit Class 3A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 1/8"
Countersink Angle 82°

Material & Strength

Material Zinc-Plated Alloy Steel
Hardness Rockwell C32
Tensile Strength 120000 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

  • Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
  • Superior corrosion resistance with zinc plating protects against rust and extends service life in harsh industrial environments.
  • Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant connections in critical assemblies.
  • Hex drive design allows for easy installation with standard tools, minimizing assembly time and improving workflow efficiency.
  • Fully threaded shank offers consistent gripping power along the entire length, enhancing load distribution and joint integrity.
  • 82° countersink angle enables a flush finish when installed, preventing snagging and maintaining a clean, professional appearance.
  • Compliance with ASME B18.3, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 10-32 UNF flat head screws combine zinc-plated alloy steel construction with fine thread spacing to address common challenges like vibration loosening and corrosion. The Class 3A thread fit and fully threaded design provide superior holding power in machinery, automotive, and electronics assemblies, where precision and durability are critical. The hex drive facilitates quick installation, reducing labor costs, while the 82° countersink ensures a seamless fit in countersunk holes, ideal for applications requiring a smooth surface finish. This screw is a reliable solution for heavy-duty fastening needs, offering long-term performance in rigorous environments.

Specification Summary & Compliance

This product features a 10-32 UNF thread size with Class 3A precision fit and fine thread spacing, ensuring high dimensional accuracy. Manufactured in accordance with ASME B18.3 specifications, it includes full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and suitability for global industrial use.

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