What to Check When Buying Carriage Bolts

When buying carriage bolts in bulk, it is important to make sure the bolts meet the required specifications before they are shipped. Dimensions, threads, material, surface finish, and appearance are some of the main things to look at.

carriage bolt

Carriage Bolt Dimensions

Start with the basic dimensions. The carriage bolt diameter, length, head size, and square neck should match the order specifications.

Consistent dimensions are particularly important for large orders. If the size varies too much, the bolts may not fit properly with the nuts or parts they are used with.

carriage bolt

Carriage Bolt Threads

The threads should be clean and properly formed, without obvious damage or defects.

For bulk orders, thread size and fit can be checked with suitable gauges or inspection tools to make sure the bolts work properly with the matching nuts.

carriage bolt

Carriage Bolt Material

The material is another important point. Carbon steel carriage bolts are widely used, while stainless steel carriage bolts are often chosen when better corrosion resistance is needed.

If a specific material or grade is required, the supplier should be able to confirm the material used for production and provide the relevant documents when necessary.

carriage bolt

Surface Finish and Appearance of Carriage Bolt

It is also worth checking the overall appearance of the bolts. Cracks, heavy scratches, rust, or uneven surface treatment should not be overlooked.

The surface finish should match the order, whether the bolts are supplied with a particular coating or in stainless steel. Good packaging also helps protect the bolts during storage and transportation.

Carriage Bolts

Inspection of Carriage Bolts Before Shipment

Before shipment, a carriage bolt manufacturer can inspect the main quality points, including dimensions, threads, material, appearance, and quantity.

For large or customized orders, customers can also arrange sample approval or discuss specific inspection requirements with the supplier before production starts.

Carriage Bolts from Xinchi Fastener Factory

Xinchi Fastener Factory was established in 2007 and has more than 15 years of experience in fastener manufacturing. The factory has 102 cold heading machines and a daily production capacity of more than 10 million pieces.

Xinchi Fastener Factory

The new factory covers 30,000 square meters and includes two six-story buildings. Xinchi can supply carriage bolts and other fasteners, including DIN1624 T nuts, thread insert nuts, rivet nuts, Hopper Feed T nuts, flange bolts, DIN 571 wood screws, bolts, and washers for different customer requirements.