S-92356A581 5/16"-18 x 3/4" ASME B18.5 Carriage Bolts

Carriage Bolts

0850FA00117 Carriage Bolts
0850FA00117 Carriage Bolts

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

Part No.
Part No. 0850FA00117
Equivalent to mcmaster :
92356A581

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 3/4"
Screw Diameter 0.3125"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2A

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 for long-lasting performance in harsh environments
  • Enhanced anti-rotation security thanks to the integrated square neck design that prevents spinning during installation
  • High tensile strength of 70,000 psi ensures reliable load-bearing capacity for demanding applications
  • Excellent thread engagement with UNC coarse threading and Class 2A fit for quick installation and secure fastening
  • Optimized durability with Rockwell B55 hardness providing resistance to wear and deformation
  • Full thread coverage along the 3/4" length offers versatile fastening options and maximum grip
  • Regulatory compliance with ASME B18.5 standards and environmental regulations for worry-free industrial use

Professional Applications & Engineering Value

This 18-8 stainless steel carriage bolt delivers exceptional engineering value through its combination of corrosion-resistant material and anti-rotation square neck design. The 5/16"-18 UNC coarse thread configuration ensures rapid installation in wood-to-metal and structural applications where vibration resistance is critical. The fully threaded construction provides maximum engagement surface, while the rounded head profile offers a finished appearance without sharp edges. Ideal for industrial machinery, agricultural equipment, and outdoor structures, this bolt solves common challenges of loosening under dynamic loads and environmental degradation. The 70,000 psi tensile strength and Rockwell B55 hardness make it suitable for heavy-duty applications where both mechanical performance and corrosion resistance are paramount requirements.

Specification Summary & Compliance

This carriage bolt maintains Class 2A thread fit tolerance for consistent performance and features 5/16"-18 UNC coarse threading with right-hand direction. Manufacturing complies with ASME B18.5 specifications for dimensional accuracy and quality assurance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components.

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