S-90185A160 1/4"-20 x 3/4" 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
- Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for demanding structural applications
- Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh environments
- Non-rotating installation ensured by the square neck design, preventing loosening under vibration
- Reliable coarse threading (UNC 1/4"-20) for faster assembly and reduced cross-threading risk
- Consistent performance with Class 2A thread fit and Rockwell C25 hardness for precise, durable fastening
- Wide-rounded head profile distributes clamping force evenly and provides a finished appearance
- Full compliance with industry standards including ASME B18.5 and SAE J429 for guaranteed quality
Professional Applications & Engineering Value
This Grade 5 carriage bolt delivers critical engineering solutions where vibration resistance and structural integrity are paramount. The zinc-flake coated steel construction provides exceptional protection against corrosion in industrial, agricultural, and construction environments. The square neck securely locks into materials during installation, eliminating rotation and maintaining alignment in wood-to-metal and heavy timber applications. With fully threaded UNC coarse threading, it offers superior pull-out resistance and faster installation in structural frameworks, trailer assemblies, and machinery bases. The combination of 120,000 psi tensile strength and Rockwell C25 hardness ensures reliable performance under sustained loads and dynamic stress conditions.
Specification Summary & Compliance
This 1/4"-20 UNC carriage bolt features Class 2A thread tolerances for consistent fit and is manufactured to ASME B18.5 and SAE J429 Grade 5 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. Dimensions include 0.594" head diameter, 3/4" length, and 0.26" square neck width, ensuring interchangeability and reliable performance in industrial fastener applications.
