1/4"-20 x 3-1/2" (100 Pack) Zinc Carriage Bolt for Exterior Use, Commercial Grade 307A, Fully Threaded - by Fastener Depot
Product details
| Management number | 220320172 | Release Date | 2026/05/03 | List Price | US$15.99 | Model Number | 220320172 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
Zinc carriage bolts are used for securely fastening wood and metal in projects like decks, fences, docks, and playground equipment, especially where a smooth, snag-free finish is desired. The zinc plating provides a moderate level of corrosion resistance for outdoor use, while the bolt's square neck locks into the wood to prevent spinning and allows for one-person installation from one side. Key uses Woodworking: Commonly used to join wood beams and panels in projects such as building decks, docks, fences, and outdoor furniture. Play equipment: Ideal for playground equipment because the smooth, rounded head prevents snagging. Trailer and vehicle applications: Used for wood floors, stake sides, and tie-downs on trailers and other automotive projects. General construction: Employed in a variety of construction and repair jobs, especially where security and a clean appearance are important. Benefits of zinc plating Corrosion resistance: Zinc plating offers moderate protection against rust and corrosion, making the bolts suitable for many outdoor applications. Durability: The zinc coating adds a layer of durability to the bolt. Benefits of the carriage bolt design Self-locking: The square neck under the head of the bolt bites into the wood when tightened, preventing the bolt from turning and making installation easier for a single person. Security: The smooth, domed head has no drive slots, meaning the bolt can only be tightened or loosened from the nut side. Snag-free finish: The flush, rounded head reduces the risk of catching on other materials.
- Coarse Thread
- Self-Locking Head Design
- Zinc Plated For Superior Corrosion Resistance
- Commercial Grade 307A
- Threaded Length: Fully Threaded
- Minimum Tensile Strength: 60,000 PSI / Hardness: 69 to 100 HRB
- Minimum Coating Thickness: 0.0001” (3 Microns)
- Specifications Met/Exceeded: Coating Specifications: ASTM F1941/F1941M Fe/Zn 3AN or Fe/Zn 5AN ; Steel Mechanical Specifications: ASTM A307 Grade A ; Dimensional Specifications: ASME B18.5
- RoHS Compliant
| UPC | 680699499899 |
|---|---|
| Brand | Fastener Depot |
| Color | silver |
| Model | FD489030 |
| Head Type | Self Locking |
| Size Name | 1/4-20 x 3-1/2" |
| Metal Type | Low Carbon Steel |
| Unit Count | 100.0 Count |
| Item Weight | 3 Pounds |
| Part Number | FD489030 |
| Thread Size | 1/4"-20 |
| Thread Type | Unc |
| Grade Rating | Grade A |
| Manufacturer | Fastener Depot, LLC |
| Thread Style | Right Hand |
| Fastener Type | Carriage Bolt |
| Item Diameter | 0.25 Inches |
| Material Type | Alloy Steel |
| Exterior Finish | Zinc |
| Item Dimensions | 3.5 x 0.12 x 0.59 inches |
| Number Of Items | 100 |
| Thread Coverage | Fully Threaded |
| Number of Pieces | 100 |
| Screw Head Style | Round |
| Manufacturer Grade | Grade 307A |
| Maximum Shear Strength | 60,000 PSI |
Bestseller ranking
Accessories
Customers who viewed this product also viewed
Carriage Bolts
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form