[PRODUCT_DESCRIPTION]

Prime‑Line® carriage bolts provide strong, dependable fastening for wood‑to‑wood or wood‑to‑metal applications commonly found in home improvement and repair projects. Featuring a smooth, rounded head with a square neck, these bolts are designed to prevent turning during installation and deliver a clean, finished appearance on visible surfaces. Ideal for use in outdoor furniture, decks, fencing, gates, signage, and structural assemblies, Prime‑Line carriage bolts are intended for use with same‑size matching nuts and washers to ensure proper fit, improved load distribution, and a secure long‑lasting hold. Manufactured from quality materials for durability and corrosion resistance, they install easily with standard tools and perform reliably in both indoor and outdoor environments. Trusted by DIY homeowners and professionals across the U.S., Prime‑Line carriage bolts make it easy to complete projects with strength, stability, and a professional finish.

[/PRODUCT_DESCRIPTION]

[SPECIFICATIONS]

Size: 3/8 inch-16 X 4 inch
Features a smooth rounded head as opposed to a standard hex head
Square shoulder allows for nut to be tightened or loosened
Often used in cases where a protruding bolt head could cause injury
Nuts and washers not included, ensure washers and nuts are same diameter
Thread Type: Coarse, Thread Class: UNC-2A, Point Style: Blunt
Specification(s) Met: ASME B18.5 and ASTM A307A

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[WARRANTY]

Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse.

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Carriage Bolts, 3/8 in.-16 X 4 in., A307 Grade A Hot Dip Galvanized Steel (25 Pack)

Carriage Bolts, 3/8 in.-16 X 4 in., A307 Grade A Hot Dip Galvanized Steel (25 Pack)

Product Details

Specifications

Warranties & Manuals