S-93306A540 1/4"-20 x 3/4" Aluminum Hex Head Screws

Aluminum Hex Head Screws

0253FA00017 Aluminum Hex Head Screws
0253FA00017 Aluminum Hex Head Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0253FA00017
Equivalent to mcmaster :
93306A540

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 7/16"
Head Height 5/32"

Dimensions

Length 3/4"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material 2024 Aluminum
Hardness Rockwell B40
Tensile Strength 30000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
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 strength-to-weight ratio from 2024 aluminum construction, providing reliable 30,000 psi tensile strength while reducing component weight
  • Superior corrosion resistance inherent to aluminum alloy, ensuring long-term durability in demanding industrial environments
  • Quick installation and removal with external hex drive design and 7/16" head width for secure tool engagement
  • Reliable thread engagement through UNC coarse threading with Class 2A fit, preventing cross-threading and ensuring consistent performance
  • Full thread coverage along the entire 3/4" length for maximum grip and load distribution across joined materials
  • Environmental compliance assurance with RoHS 3 and REACH regulations, meeting international safety standards
  • Consistent hardness performance at Rockwell B40, maintaining structural integrity under repeated use

Professional Applications & Engineering Value

These 2024 aluminum hex head screws deliver critical engineering advantages where weight reduction cannot compromise fastening reliability. The UNC coarse thread configuration with Class 2A fit provides optimal thread engagement in aluminum assemblies, electronic enclosures, and transportation equipment where vibration resistance is paramount. The fully threaded design ensures maximum clamping force distribution, while the external hex drive accommodates high-torque installation in confined spaces. These industrial fasteners solve common challenges of galvanic corrosion in mixed-material assemblies while maintaining 30,000 psi tensile strength - making them ideal for aerospace components, marine hardware, and precision instrumentation where both performance and regulatory compliance are non-negotiable.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance across applications. The UNC coarse thread (1/4"-20) specification ensures compatibility with standard industrial components. These screws maintain compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they contain no restricted substances. The combination of Rockwell B40 hardness and 30,000 psi tensile strength validates their suitability for demanding mechanical applications where aluminum fasteners are specified.

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