A carriage bolt is a type of fastener used to secure pieces of wood or metal. It consists of a cylindrical shaft with a square-shaped head and threads at one end. The chair’s unique shape allows it to be inserted into pre-drilled holes in the materials to be joined, while its threads allow it to be tightened securely. Let’s look at the different types and uses of carriage bolts.
Types and Sizes of Carriage Bolts
Carriage bolts come in many different sizes and are designed for various uses. They can range from 3/8 inch to 4 inches in diameter and come in lengths ranging from 1/2 inch to 12 inches. Most common applications call for a 1/4-inch diameter carriage bolt with a length between 1/2 inch and 8 inches. Carriage bolts also come in metric sizes, which are measured by millimeters instead of inches.
Carriage Bolt Uses
Carriage bolts are used in many applications, particularly those that require high-strength connections between two pieces of material, such as wood or metal. For instance, they are often used to attach hinges to doors or furniture frames because they provide an aesthetically pleasing look while ensuring that the connection is secure. Carriage bolts are also often used when constructing barns, sheds, decks, gazebos, and other outdoor structures because they can withstand harsh weather conditions without corroding or rusting over time. Additionally, due to their strength and durability, carriage bolts are frequently used as structural fasteners for bridges and other large construction projects.
Carriage Bolt Properties
- Carriage bolts are made from various materials, including steel, stainless steel, and brass.
- Carriage bolts have a smooth, rounded head designed to prevent the bolt from snagging on clothing or skin.
- The shank of a carriage bolt is fully threaded, making it easy to install with a nut or washer.
- Carriage bolts are often used in woodworking applications, as the smooth head prevents the bolt from splitting the wood.
- Carriage bolts are also commonly used in metalworking applications, as they can create a strong joint between two pieces of metal.
Carriage Bolts Dimensions
| Basic Bolt Diameter | Body Diameter (E) | Head Diameter (A) | Head Height (H) | Square Width (O) | Square Depth (P) | |||||
| Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | |
| 8 | .1640 | .157 | .328 | .298 | .102 | .083 | .169 | .155 | .108 | .078 |
| 10 | .1900 | .182 | .436 | .436 | .114 | .094 | .199 | .185 | .125 | .094 |
| 12 | .2160 | .206 | .500 | .468 | .149 | .125 | .215 | .197 | .135 | .105 |
| 1/4 | .2500 | .237 | .594 | .563 | .145 | .125 | .260 | .245 | .156 | .125 |
| 5/16 | .3125 | .298 | .719 | .688 | .176 | .156 | .324 | .307 | .187 | .156 |
| 3/8 | .3750 | .360 | .844 | .782 | .208 | .188 | .388 | .368 | .219 | .188 |
| 7/16 | .4375 | .421 | .969 | .907 | .239 | .219 | .452 | .431 | .250 | .219 |
| 1/2 | .5000 | .483 | 1.094 | 1.032 | .270 | .250 | .515 | .492 | .281 | .250 |
| 5/8 | .6250 | .605 | 1.344 | 1.219 | .344 | .313 | .642 | .616 | .344 | .313 |
| 3/4 | .7500 | .729 | 1.594 | 1.469 | .406 | .375 | .768 | .741 | .406 | .375 |
Conclusion:
Carriage bolts are versatile fasteners that serve many purposes, from securing furniture hinges to supporting major construction projects. They offer strength and reliability thanks to their unique design – featuring a cylindrical shaft with a square-shaped head – which allows them to be easily inserted into pre-drilled holes before being tightened securely using their threads on one end. With so many sizes available – both imperial and metric – there’s sure to be a perfect match no matter what your project requires!
A passionate metal industry expert and blogger. With over 5 years of experience in the field, Palak brings a wealth of knowledge and insight to her writing. Whether discussing the latest trends in the metal industry or sharing tips, she is dedicated to helping others succeed in the metal industry.
