S-91263A543 10-32 x 5/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Alloy Steel Hex Drive Flat Head Screws

0309FA00565 Alloy Steel Hex Drive Flat Head Screws
0309FA00565 Alloy Steel Hex Drive Flat Head Screws

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Part No.
Part No. 0309FA00565
Equivalent to mcmaster :
91263A543

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 5/8"

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 C39
Tensile Strength 130000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
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 corrosion resistance with zinc-plated alloy steel construction for long-lasting performance in harsh industrial environments
  • Superior thread engagement with Class 3A fine thread fit ensuring vibration resistance and reliable fastening in critical applications
  • High tensile strength rating of 130,000 psi provides reliable load-bearing capacity for demanding mechanical assemblies
  • Optimized flush mounting with 82° countersink angle and flat head design for seamless surface integration
  • Enhanced installation efficiency through hex drive configuration allowing high-torque application with standard tools
  • Full threading coverage along the 5/8" length enables maximum grip strength across the entire fastener engagement
  • Industry compliance assurance meeting ASTM F835 specifications for consistent quality and performance standards

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver critical engineering solutions where vibration resistance and corrosion protection are paramount. The zinc-plated alloy steel construction combined with Class 3A thread fit addresses common industrial challenges of fastener loosening under dynamic loads. The fine thread spacing provides superior clamping force distribution, making these screws ideal for precision equipment, machinery assemblies, and electronic enclosures requiring secure, long-term fastening. The 82° countersink angle ensures flush mounting in standardized applications, while the hex drive design facilitates efficient installation in confined spaces common in industrial settings.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 3A thread fit tolerance per UNF standards, ensuring consistent threading performance. The fully threaded right-hand design maintains uniform engagement throughout the 5/8" length. Compliance includes ASTM F835 specifications for mechanical properties, along with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for global industrial applications requiring restricted substance compliance.

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