S-91223A456 M8 x 50 mm 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

316 Stainless Steel Ultra-Low-Profile Socket Head Screws

0031FA00102 316 Stainless Steel Ultra-Low-Profile Socket Head Screws
0031FA00102 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

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Part No.
Part No. 0031FA00102
Equivalent to mcmaster :
91223A456

Basic Information

System of Measurement Metric

Head Parameters

Head Type Socket
Head Diameter 13 mm
Head Diameter Tolerance -0.127mm to 0.127mm
Head Height 2.7 mm
Socket Head Profile Ultra-Low

Dimensions

Length 50 mm
Shoulder Diameter 8.5 mm
Shoulder Length 2.7 mm

Thread Parameters

Thread Type Metric
Thread Size M8
Thread Pitch 1.25 mm
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 6g
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 5 mm

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

  • Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
  • Superior torque transmission and strip resistance thanks to the ultra-low socket head profile and 5 mm hex drive design
  • Reliable and precise fit ensured by the Class 6g thread tolerance, minimizing the risk of cross-threading and assembly issues
  • High mechanical strength with 70,000 PSI tensile strength and Rockwell B70 hardness for demanding applications
  • Broad compatibility with standard M8 x 1.25mm coarse pitch threads, simplifying sourcing and replacement
  • Full-length threading (M8) provides consistent clamping force and versatile fastening along the entire 50 mm length
  • Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this M8 socket head cap screw in 316 stainless steel addresses critical challenges like corrosion in marine, chemical processing, and food-grade environments. The ultra-low head profile and 5 mm hex drive allow for high torque application in confined spaces, reducing the risk of tool slippage and head stripping. The Class 6g thread fit and coarse pitch (1.25mm) ensure quick assembly and a secure, vibration-resistant connection, which is vital for machinery, automotive assemblies, and heavy equipment where joint integrity is paramount. Its fully threaded 50 mm length offers uniform stress distribution, making it a reliable choice for high-stress engineering and construction projects.

Specification Summary & Compliance

This socket head cap screw adheres to metric standards with an M8 thread size, 1.25mm coarse pitch, and a precise Class 6g thread fit for dimensional accuracy. Manufacturing specifications include a head diameter tolerance of -0.127mm to 0.127mm and a hardness of Rockwell B70. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.

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