3/8" x 4" (50 Pack) Galvanized Carriage Bolt Kit, Grade 307A, Hot Dip Galvanized for Exterior Use by Makers Bolt
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- Diameter: 3/8" | Length: 4" | Head diameter: 0.813" | Nut diameter: 3/8" | Nut wrench size: 9/16" | Washer outside diameter: 1"
- Kit includes 50 carriage bolts, 50 USS thick washers, 50 hex nuts
- Hot dip galvanized coating for superior corrosion resistance
- Grade 307A carriage bolts, grade 2 hex nuts, and USS flat washers
- The flat head provides a semi-flush finish and is perfect for decks, gazebos, pergolas, and other heavy duty applications
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Select a product to estimate shipping.Need a reliable and durable fastener for your outdoor projects? This kit provides a set of galvanized carriage bolts designed to withstand the elements, offering a strong and secure connection for a variety of construction and repair tasks.
Key Highlights
- Corrosion Resistance: Hot-dip galvanized coating protects against rust and weathering, extending the bolt’s lifespan.
- Heavy-Duty Construction: Made from alloy steel and designed for demanding applications like decks and gazebos.
- Complete Kit: Includes bolts, washers, and nuts for a straightforward installation process.
- Precise Fit: Designed with a 3/8" diameter and 4" length for compatibility with various projects.
- Easy Installation: Features a 9/16" nut wrench size for convenient tightening.
Useful Facts
- Material: Alloy Steel
- Thread Size: 3/8"-16
- Finish: Hot-Dipped Galvanized
- Manufacturer Grade: A307
- Head Style: Round
Good Fit For
- Building decks and pergolas
- Constructing gazebos and outdoor structures
- Repairing fences and sheds
- General DIY projects requiring robust fasteners
Product details





| Main Specification | |
|---|---|
| Manufacturer | Makers Bolt |
| Unit Count | 50 Count |
| Exterior Finish | Hot-Dipped Galvanized |
| Metal Type | Carbon Steel |
| Head Style | Round |
| Manufacturer Grade | A307 |
| Thread Coverage | Fully Threaded |
| Outside Diameter | 1 Inches |
| Brand | Makers Bolt |
| Head Type | Round |
| UPC | 810074742986 |
| Fastener Type | Carriage Bolt |
| Item Diameter | 0.38 Inches |
| Number of Pieces | 150 |
| Fastener Size | 3/8" x 4" |
| Thread Size | 3/8"-16 |
| Material | Alloy Steel |
| Colour | Grey |
| Product information | |
| Number of Packs | 1 |
| Set Name | 3/8" x 4" Galvanized Carriage Bolt Kit (50 Piece) |
| Technical Details | |
| Part Number | CBK3864GV50 |
| Material Type | Alloy Steel |
| Number Of Items | 50 |
| Thread Style | Right Hand |
| Thread Class | 2a |
| Item Hardness | Grade 2 |
| Style | |
| Finish Types | Hot-Dipped Galvanized |
| Others | |
| Product Type | Carriage Bolts |
| Grade Rating | Grade A307 |
| Size Name | 3/8 x 4 |
| Screw Head Style | Round |














