S-94050A325 5/16"-18 x 2" ASME B18.5 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 in harsh environments thanks to silicon bronze material composition
- Exceptional anti-rotation performance ensured by the integrated square neck design that locks securely into materials
- Reliable coarse UNC threading (5/16"-18) provides excellent grip and faster installation in various applications
- Precise Class 2A thread fit guarantees consistent performance and compatibility with standard nuts
- Wide, rounded carriage head offers a finished appearance and distributes load effectively
- Full threading along the 2" length allows for maximum adjustability and secure fastening depth
- Compliance with major industry standards including ASME B18.5, RoHS 3, and REACH for guaranteed quality and environmental safety
Professional Applications & Engineering Value
These silicon bronze carriage bolts deliver critical performance in demanding applications where corrosion and vibration are major concerns. The square neck design mechanically prevents rotation during tightening and under dynamic loads, solving common loosening issues in wood-to-metal and structural connections. With fully threaded UNC coarse threads, they provide superior pull-out resistance in softer materials and faster assembly times. The silicon bronze material offers excellent resistance to saltwater, chemicals, and atmospheric corrosion, making these carriage bolts ideal for marine hardware, coastal construction, water treatment facilities, and industrial equipment exposed to corrosive elements. Their compliance with ASME B18.5 ensures dimensional reliability across projects.
Specification Summary & Compliance
This 5/16"-18 UNC carriage bolt features a Class 2A thread fit for standard tolerance and a 2" length with full threading. The head diameter measures 0.719" with a square neck of 0.32" width. Manufactured in accordance with ASME B18.5 specifications. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substances.
