S-92356A165 5/16"-18 x 6 1/2" ASME B18.5 Carriage Bolts

Carriage Bolts

0850FA00049 Carriage Bolts
0850FA00049 Carriage Bolts

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Part No.
Part No. 0850FA00049
Equivalent to mcmaster :
92356A165

Basic Information

System of Measurement Inch
Specifications Met ASME B18.5

Head Parameters

Head Type Rounded
Head Diameter 0.719"
Head Height 0.176"
Rounded Head Profile Wide
Rounded Head Style Carriage

Neck & Shank Parameters

Neck Type Square
Neck Length 0.19"
Neck Width 0.32"

Dimension Parameters

Length 6 1/2"
Screw Diameter 0.3125"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Threading Partially Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2A
Min Thread Length 1 1/4"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell B55
Tensile Strength 70000 psi

Finish & Compliance Parameters

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 18-8 Stainless Steel construction, ideal for harsh environments like marine or outdoor applications
  • Exceptional anti-rotation performance due to the square neck design, preventing loosening under vibration and dynamic loads
  • High tensile strength of 70,000 psi ensures reliable load-bearing capacity for heavy-duty industrial and construction uses
  • Rockwell B55 hardness provides excellent durability and resistance to wear and deformation
  • Partially threaded UNC coarse thread allows for faster installation and secure clamping in wood and metal assemblies
  • Compliance with ASME B18.5 standards guarantees precise dimensions and consistent quality for engineering applications
  • RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains

Professional Applications & Engineering Value

This 5/16"-18 UNC Carriage Bolt is engineered to solve critical challenges in demanding environments. The 18-8 Stainless Steel material offers outstanding corrosion resistance, making it suitable for marine, construction, and industrial settings where moisture and chemicals are present. The square neck design effectively prevents rotation during tightening, reducing installation time and enhancing safety in structural assemblies. With a partially threaded configuration and coarse threading, it ensures quick, secure fastening in wood, metal, and composite materials. Its high tensile strength and hardness support heavy loads, while compliance with ASME B18.5 ensures reliability in engineering projects, from machinery to infrastructure.

Specification Summary & Compliance

This carriage bolt features precise dimensions, including a Class 2A thread fit for consistent engagement and a 5/16"-18 UNC coarse thread with right-hand direction. It meets ASME B18.5 manufacturing specifications for accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.

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