S-93306A546 1/4"-20 x 1 1/2" Aluminum Hex Head Screws

Aluminum Hex Head Screws

0253FA00020 Aluminum Hex Head Screws
0253FA00020 Aluminum Hex Head Screws

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

Part No.
Part No. 0253FA00020
Equivalent to mcmaster :
93306A546

Basic Information

System of Measurement Inch

Head Parameters

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

Dimensions

Length 1 1/2"

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

  • Superior strength-to-weight ratio from 2024 aluminum construction, providing reliable performance without adding unnecessary bulk to assemblies
  • Exceptional corrosion resistance for extended service life in demanding industrial environments and chemical exposure situations
  • Precise Class 2A thread fit ensures smooth installation and consistent engagement with mating components
  • High tensile strength rating of 30,000 psi delivers dependable load-bearing capacity for critical applications
  • Rockwell B40 hardness maintains thread integrity and prevents deformation during repeated use
  • External hex drive design allows for high-torque installation with standard tools and easy removal when needed
  • Full threading along the entire 1½" length provides maximum grip and adjustment flexibility in various material thicknesses

Professional Applications & Engineering Value

This 1/4"-20 UNC hex head screw manufactured from 2024 aluminum addresses critical engineering challenges in weight-sensitive applications where corrosion resistance and structural integrity are paramount. The coarse UNC threading with Class 2A fit prevents cross-threading during high-speed assembly operations while maintaining vibration resistance in dynamic environments. The combination of 30,000 psi tensile strength and Rockwell B40 hardness ensures these fasteners withstand mechanical stresses in aerospace components, electronic enclosures, and transportation equipment without compromising the lightweight advantages of aluminum construction. The fully threaded design maximizes engagement in varying material thicknesses, making these screws ideal for assembly lines requiring versatile fastening solutions.

Specification Summary & Compliance

This hex head screw features precise 1/4"-20 UNC coarse threading with Class 2A thread fit tolerance, ensuring compatibility with standard mating components. The fastener meets RoHS 3 (2015/863/EU) compliance standards and is REACH (EC 1907/2006) compliant, confirming adherence to environmental and safety regulations for industrial use. Manufacturing specifications include 1½" length, external hex drive configuration, and right-hand thread direction for standardized installation procedures.

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