S-93548A585 5/16"-18 x 1 1/4" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, ideal for outdoor or humid environments
• Superior tensile strength of 60,000 PSI ensures reliable performance in demanding applications
• Rockwell B70 hardness provides excellent durability and resistance to wear
• Square neck design prevents rotation during installation, speeding up assembly
• Class 2A thread fit with UNC coarse spacing offers easy alignment and secure fastening
• Fully threaded shank allows for maximum grip and adjustability in various materials
• Compliance with ASTM A307, SAE J429, and ASME B18.5 guarantees consistent quality and safety

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt is engineered to address common industrial challenges, such as vibration loosening and corrosion in heavy-duty applications. The square neck securely locks into wood or metal, preventing spin-out during tightening, while the UNC coarse thread ensures quick installation and high clamping force. With a Grade 2 strength rating and 60,000 PSI tensile strength, it excels in construction, machinery, and agricultural equipment, providing long-term reliability and reducing maintenance needs. The zinc plating adds a protective layer, making it suitable for environments exposed to moisture, thus extending service life and supporting efficient project timelines.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit and UNC coarse threading with a diameter of 5/16"-18 and length of 1-1/4". It meets ASTM A307, SAE J429, and ASME B18.5 standards for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant, ensuring environmental safety and regulatory adherence in industrial use.