1/4" x 2-1/2" (100 Pack) Galvanized Carriage Bolt Kit Grade 307A Includes 1/4" USS Flat Washers (100 pcs) and 1/4"-20 Hex Nuts (100 pcs), Hot Dip Galvanized for Exterior Use by Makers Bolt
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- Diameter: 1/4" | Length: 2-1/2" | Head diameter: 0.578" | Nut diameter: 1/4" | Nut wrench size: 7/16" | Washer outside diameter: 47/64"
- Kit includes 100 Grade 307A carriage bolts, 100 USS thick washers, 100 Grade 2/A hex nuts
- Hot dip galvanized coating for superior corrosion resistance, Suitable for use in ACQ treaded lumber
- The flat head provides a semi-flush finish and is perfect for decks, gazebos, pergolas, and other heavy duty applications
- Meets or Exceeds: ASME B18.5, ASTM A307, ASME B18.2.2, ASTM A563, ASME B18.21.1, ASTM F2329
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Select a product to estimate shipping.This comprehensive kit provides everything you need for robust outdoor projects. Featuring durable, hot-dip galvanized carriage bolts, washers, and nuts, it’s built to withstand the elements and deliver reliable fastening for years to come.
Key Highlights
- Corrosion Resistant: Hot-dip galvanized coating protects against rust and weathering, ideal for exterior use.
- Complete Kit: Includes bolts, washers, and nuts, simplifying your project and reducing the need for separate purchases.
- Heavy-Duty Strength: Grade 307A steel provides excellent strength and durability for demanding applications.
- Flat Head Design: The flat head creates a clean, flush finish, suitable for decks and other outdoor structures.
- Easy Installation: 1/4"-20 thread size and 7/16" nut wrench size ensure straightforward assembly.
Useful Facts
- Material: Low Carbon Steel
- Thread Size: 1/4"-20
- Finish: Hot-Dipped Galvanized (Grey)
- Grade: A307
- Diameter: 1/4" (Bolt & Washer)
- Length: 2-1/2"
Good Fit For
- Building decks, gazebos, and pergolas
- DIY outdoor projects and repairs
- General construction and fastening tasks
- Projects utilizing ACQ treated lumber
Product details





| Main Specification | |
|---|---|
| Tillverkare | Makers Bolt |
| Unit Count | 100 greve |
| Exteriör Finish | Hot-Dipped Galvanized |
| Metalltyp | Carbon Steel |
| Huvudstad | Flat |
| Tillverkare Grade | A307 |
| Tråd täckning | Fullt trådad |
| Utanför Diameter | 0.58 inches |
| Brand varumärke | Makers Bolt |
| Huvudtyp | Flat |
| UPC | 810074742962 |
| Antal objekt | 100 100 100 100 |
| Fastener Type | Carriage Bolt |
| Punkt Diameter | 0,25 inches |
| Antal bitar | 100 100 100 100 |
| Fastener Size | 1/4" - 2-1/2" |
| Trådstorlek | 1/4"-20 |
| Materialmaterial | Low Carbon Steel |
| Färg | Grå |
| Trådtyp | UNC |
| Product information | |
| Ställ namn | 1/4" x 2-1/2" Galvanized Carriage Bolt Kit (100 Piece) |
| Technical Details | |
| Delnummer | CBK2540GV100 |
| Materialtyp | Low Carbon Steel |
| Thread Style | Unified National Coarse |
| Trådklass | 2a |
| Kompatibel Groove Diameter | 0.44 inches |
| Objektets hårdhet | Grade 2 |
| Style | |
| Finish Typer | Galvanized |
| Measurements | |
| Objekt Dimensioner | 2.5 x 0.25 x 0.25 inches |
| Others | |
| Produkttyp | Carriage Bolts |
| Grade Rating | Grade A307 |
| Storlek Namn | 1/4" x 2-1/2" |
| Skruv huvudstil | Flat |












