S-91345A554 1/4"-20 x 3/4" Fiberglass Hex Head Screws

Fiberglass Hex Head Screws

0257FA00002 Fiberglass Hex Head Screws
0257FA00002 Fiberglass Hex Head Screws

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

Part No.
Part No. 0257FA00002
Equivalent to mcmaster :
91345A554

Basic Information

Color Gray
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 7/16"
Head Height 13/64"

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 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.
REQUEST A QUOTE
  • Fast delivery
  • Enjoy discounts on bulk purchases
  • Secure Payment
  • Fast Global Shipping

Key Features & Benefits at a Glance

  • Exceptional corrosion resistance due to premium fiberglass construction, ideal for harsh industrial environments
  • Reliable performance across wide temperature ranges from -60°F to 190°F, ensuring stability in varying conditions
  • Quick and secure installation with external hex drive and coarse UNC threading for efficient assembly
  • Precise thread fit with Class 2A tolerance, providing consistent engagement and reducing cross-threading risks
  • Full threading along the 3/4" length offers maximum grip and adjustability in applications
  • Environmentally compliant with RoHS 3 standards, meeting global regulatory requirements for safe use
  • Durable gray finish maintains appearance and integrity under mechanical stress and exposure

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 1/4-20 UNC hex head screw addresses common challenges like corrosion and thermal expansion. The fiberglass material provides inherent resistance to rust and chemicals, eliminating the need for additional coatings in corrosive environments. With a coarse thread spacing and Class 2A fit, it ensures rapid installation and reliable hold in materials such as composites, plastics, and metals, reducing assembly time and improving productivity. The fully threaded design and right-hand threading offer versatile fastening solutions in electrical enclosures, HVAC systems, and machinery where high-temperature tolerance and regulatory compliance are critical. This screw delivers long-term value by minimizing maintenance and enhancing structural integrity in industrial applications.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy, ensuring compatibility with standard nuts and tapped holes. It is manufactured to meet RoHS 3 (2015/863/EU) compliance, confirming the absence of hazardous substances. The specifications include a thread size of 1/4"-20, length of 3/4", and coarse spacing, supporting reliable performance in various assembly contexts.

🔍
Cancel