S-91345A701 3/8"-16 x 1 1/4" Fiberglass Flanged Hex Head Screws

Fiberglass Flanged Hex Head Screws

0274FA00012 Fiberglass Flanged Hex Head Screws
0274FA00012 Fiberglass Flanged Hex Head Screws

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

Part No.
Part No. 0274FA00012
Equivalent to mcmaster :
91345A701

Basic Information

Color Gray
Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 9/16"
Head Height 25/64"

Dimensions

Length 1 1/4"
Flange Diameter 51/64"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
Thread Diameter 0.375"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material Fiberglass
Hardness Not Rated

Temperature & Environment

Temperature Range -60° to 190° F
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
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Key Features & Benefits at a Glance

  • Superior corrosion resistance due to high-quality fiberglass material, ideal for harsh environments without rust concerns.
  • Easy installation and removal with an external hex drive and hex head design, allowing for quick assembly using standard tools.
  • Enhanced load distribution from the integrated flange, reducing the risk of surface damage and improving joint stability.
  • Reliable thread engagement with UNC coarse threads and Class 2A fit, ensuring consistent performance in vibration-prone applications.
  • Wide temperature tolerance from -60°F to 190°F, making these screws suitable for both low and high-temperature industrial settings.
  • Full threading for maximum grip along the entire 1-1/4" length, providing secure fastening in various material thicknesses.
  • Environmental and safety compliance with RoHS 3 standards, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

These fiberglass flanged hex head screws are engineered to address common industrial challenges, such as corrosion in chemical processing or electrical insulation needs. The gray fiberglass construction offers excellent non-conductive properties and resists degradation from moisture and chemicals, eliminating the risk of galvanic corrosion. With a right-hand coarse UNC thread and external hex drive, they provide rapid, secure fastening in assembly lines, machinery, and structural frameworks. The flange design distributes clamping force evenly, preventing loosening under vibration—making them ideal for high-temperature applications in automotive, marine, and HVAC systems where durability and reliability are critical.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. It is fully threaded and features a coarse thread spacing for robust performance. Compliance with RoHS 3 (2015/863/EU) ensures the product meets stringent environmental regulations, free from hazardous substances, supporting global supply chain requirements for safety and sustainability.

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