Carriage bolts are designed to fasten a wooden face to either a wood or metal frame. Its flat head is designed to eliminate the need for a washer and provide a semi-flush finish to applications. The square underside of the head is self-locking to eliminate spinning and the need for a driving tool. The galvanized finish provides optimal rust prevention but can be chalky in appearance.
Product Details
Manufacturer: HILLMAN GROUP
Manufacturer's Part Number: 812551
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Product Specifications
| Finish | Galvanized |
| Grade | 2 |
| Head Type | Flat |
| Material | Steel |
| Measuring Type | SAE |
| Neck Type | Square |
| Overall Length | 3 in |
| Thread Size | 5/16 in |
| Thread Type | Coarse |