S-91223A313 6-32 x 1/2" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

316 Stainless Steel Ultra-Low-Profile Socket Head Screws

0031FA00028 316 Stainless Steel Ultra-Low-Profile Socket Head Screws
0031FA00028 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

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

Part No.
Part No. 0031FA00028
Equivalent to mcmaster :
91223A313

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 7/32"
Head Diameter Tolerance -0.005" to 0.005"
Head Height 3/64"
Socket Head Profile Ultra-Low

Dimensions

Length 1/2"
Shoulder Diameter 9/64"
Shoulder Length 3/64"

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 Hex
Drive Size 1/16"

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 chemical exposure
  • High-strength performance delivering 70,000 psi tensile strength and Rockwell B70 hardness for reliable, durable fastening
  • Precision fit and installation ensured by Class 2A thread fit and ±0.005" head diameter tolerance for consistent assembly
  • Space-saving design with an ultra-low profile socket head, perfect for applications with limited clearance
  • Easy and secure drive engagement using a standard 1/16" hex key, reducing slippage and tool wear
  • Broad compatibility with 6-32 UNC coarse threads, commonly used in various industrial and equipment assemblies
  • Regulatory compliance meeting RoHS 3 and REACH standards for safe, environmentally conscious manufacturing

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 stainless steel socket head cap screws provide exceptional resistance to corrosion and oxidation, making them ideal for marine, chemical processing, and food-grade equipment. The ultra-low profile head minimizes protrusion in compact assemblies, while the 6-32 UNC coarse threads and Class 2A fit ensure quick installation and vibration resistance in machinery, enclosures, and precision instruments. With a 70,000 psi tensile strength and consistent hex drive engagement, they reduce the risk of stripping and maintain clamp load under dynamic stresses, offering long-term reliability and reduced maintenance cycles.

Specification Summary & Compliance

This socket head cap screw adheres to inch system measurements with a 1/2" length and fully threaded design. Thread specifications include 6-32 UNC coarse threads with a Class 2A fit for standard tolerance, and the head diameter is precision-machined within a ±0.005" tolerance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.

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