S-91223A228 3/8"-16 x 1/2" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

316 Stainless Steel Ultra-Low-Profile Socket Head Screws

0031FA00016 316 Stainless Steel Ultra-Low-Profile Socket Head Screws
0031FA00016 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

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

Part No.
Part No. 0031FA00016
Equivalent to mcmaster :
91223A228

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 3/4"
Head Diameter Tolerance -0.005" to 0.005"
Head Height 1/8"
Socket Head Profile Ultra-Low

Dimensions

Length 1/2"
Shoulder Diameter 7/16"
Shoulder Length 1/8"

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 Hex
Drive Size 3/16"

Material & Strength

Material 316 Stainless Steel
Hardness Rockwell B70
Tensile Strength 70000 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 corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life.
  • High-strength performance offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing in demanding applications.
  • Precise and secure fastening ensured by the Class 2A thread fit and UNC coarse threads, reducing the risk of cross-threading and ensuring consistent assembly.
  • Space-saving ultra-low profile head with a hex drive for easy installation in confined spaces using standard 3/16" hex tools.
  • Full threading for maximum grip along the entire 1/2" length, providing uniform clamping force and versatility in various material thicknesses.
  • Compliance with environmental regulations, including RoHS 3 and REACH, ensuring safety and suitability for regulated industries.
  • Durable and reliable design with precise head diameter tolerance (-0.005" to 0.005") for consistent performance and reduced assembly issues.

Professional Applications & Engineering Value

This 316 Stainless Steel Socket Head Cap Screw is engineered to address critical challenges in industrial settings, such as corrosion from chemicals, moisture, and high-stress conditions. The UNC coarse threads and Class 2A fit provide excellent engagement and vibration resistance, minimizing loosening in machinery, automotive, and marine applications. Its ultra-low profile head and hex drive allow for efficient installation in tight spaces, enhancing assembly speed and reliability. With high tensile strength and full threading, it ensures secure fastening in structural components, making it a top choice for engineers seeking durability and compliance with RoHS and REACH standards.

Specification Summary & Compliance

This fastener adheres to UNC thread standards with a Class 2A thread fit for precise tolerance, ensuring consistent performance. Key dimensions include a 3/8"-16 thread size, 1/2" length, and 3/16" hex drive. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and suitability for global industrial use.

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