S-90185A587 5/16"-18 x 1 1/2" ASME B18.5, SAE J429 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Prevents rotation during installation thanks to the integrated square neck design that locks securely into materials
- High-strength performance with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
- Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fit and vibration resistance
- Enhanced durability from Rockwell C25 hardness providing excellent wear resistance and structural integrity
- Full-threaded convenience allowing installation at any point along the bolt's length for versatile positioning
- Wide head profile with rounded carriage style for superior load distribution and reduced surface damage
Professional Applications & Engineering Value
These Grade 5 carriage bolts with zinc-plated steel construction address critical challenges in industrial assembly where corrosion resistance and rotational stability are paramount. The square neck design effectively prevents spinning during tightening, eliminating the need for secondary locking mechanisms in wood-to-metal and structural applications. The UNC coarse threading with Class 2A fit ensures rapid installation while maintaining vibration resistance in machinery, construction equipment, and transportation components. With 120,000 psi tensile strength and Rockwell C25 hardness, these fasteners withstand extreme mechanical stresses in agricultural equipment, trailer assemblies, and industrial framing systems where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. These carriage bolts meet ASME B18.5 manufacturing standards and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The Grade 5 classification ensures consistent mechanical properties and performance reliability across industrial applications.
