What are Metric Carriage Bolts?

Metric Carriage Bolts are a robust and durable fastener solution, featuring a domed head, which can help prevent loosening from one side. Carriage Bolts also feature a square section underneath their head, which makes them self-locking when used within a square hole. These components are manufactured with a minimum thread length, Full Thread Carriage Bolts are also available.

Manufactured according to DIN 603, Carriage Bolts are available in diameters ranging from M5 up to M16, with Lengths between 25mm and 300mm.

Materials.

Metric Carriage Bolts are manufactured in A2 and A4 Stainless Steel as standard. Additional finishes such as Chemical Blackening and Thread Locking Patches are also available through our online store.

Are Carriage Bolts and Coach Bolts the Same?.

In short, no. However we know that these two fasteners can often be confused with one another. For assistance we've written a guide that goes into great detail about all the differences between Carriage Bolts and Coach Bolts.

Imperial Carriage Bolts.

For Imperial sizes, please see our range of Imperial Carriage Bolts. For Imperial Bolts needed with a fully threaded shaft, Imperial Full Thread Carriage Bolts are also available.

Bespoke Metric Carriage Bolts Manufacture.

High precision, bespoke manufacture of Metric Carriage Bolts to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.