S-94555A161 6-32 x 3/4" Ceramic Hex Head Screws

Ceramic Hex Head Screws

0256FA00009 Ceramic Hex Head Screws
0256FA00009 Ceramic Hex Head Screws

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

Part No.
Part No. 0256FA00009
Equivalent to mcmaster :
94555A161

Basic Information

Color Off-White
System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 1/4"
Head Height 3/32"

Dimensions

Length 3/4"

Thread Parameters

Thread Type UNC
Thread Size 6-32
Thread Diameter 0.138"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material Alumina Ceramic
Hardness Not Rated

Temperature & Environment

Maximum Temperature 3000°F
REACH Compliant
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

  • Exceptional thermal stability withstanding temperatures up to 3000°F for reliable performance in extreme heat environments
  • Superior corrosion and chemical resistance thanks to high-purity alumina ceramic construction for long service life
  • Precision Class 2A thread fit ensures consistent engagement and reliable fastening in demanding applications
  • External hex drive design provides secure tool engagement and efficient installation with standard tools
  • Fully threaded UNC coarse pattern delivers maximum holding power and faster installation in various materials
  • Regulatory compliance with RoHS 3 and REACH standards for safe use in industrial environments
  • Lightweight ceramic construction reduces component weight while maintaining structural integrity

Professional Applications & Engineering Value

This alumina ceramic hex head screw delivers critical performance advantages in extreme thermal environments where metallic fasteners would fail. The 6-32 UNC coarse thread configuration combined with Class 2A precision threading ensures reliable fastening in high-temperature furnaces, semiconductor processing equipment, and aerospace applications. The external hex drive design allows for secure tool engagement during installation, while the fully threaded construction maximizes pull-out strength. As a ceramic fastener, it provides excellent electrical insulation properties and resistance to thermal shock, making it ideal for applications requiring both mechanical strength and dielectric performance. The off-white alumina ceramic material maintains dimensional stability under thermal cycling, preventing the galling and seizing common with metal fasteners in high-temperature environments.

Specification Summary & Compliance

This hex head screw features precision 6-32 UNC coarse threads with Class 2A thread fit tolerance for consistent performance. The 3/4" length and 1/4" head width provide optimal dimensional characteristics for various industrial applications. Manufactured from high-grade alumina ceramic with external hex drive configuration and right-hand threading. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial use.

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