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Hex Bolts

Metric Hex Bolts

Imperial Hex Bolts

Hex Bolts

What are Hex Bolts ?

A Hexagon Bolt, commonly shortened to Hex Bolt, is a threaded fastener with a hexagonal head often used with nuts to join multiple components together. Nuts & Bolts work by compressing the parts held together between the bolts head and the nut - this causes a miniscule amount of elastic deformation of the bolt, and a resultant tension in the bolt which clamps the parts together with the bolt threads acting like a wedge. Hex Bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts, sometimes referred to as Hex Head Screws, are also generally available in larger sizes than alternative fasteners.

Accu stocks a wide range of Bolts, which are ideal for high-precision, heavy-duty fastening applications. Plain Bolts are Accu's most common Hexagon Bolt range, and feature a reinforced, unthreaded portion below the head. For installation into pre-tapped holes, Fully Threaded Hex Bolts are available. A variety of specialist variants are also sold, including Flanged Bolts, Carriage Bolts and Coach Bolts.

Plain Hex Bolts

Plain Hex Bolts feature an unthreaded portion below the head of the Bolt, which is stronger due to the absence of teeth. The unthreaded section can serve a variety of purposes, and is commonly used for anti-vibration, as a dowel, or as a point around which an unthreaded component can rotate. This type of bolt is the most commonly used, as bolt fastenings are generally held in place by the compression forces created by an accompanying Hexagon Nut, rather than by thread-to-thread contact with a housing.

Tap Bolts

As their name suggests, Tap Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together. Full Thread Carriage Bolts are also a popular fastener choice.

Hex Bolt Materials

Accu’s Hex Bolts are available in an array of materials, including A2, A4, and A4-80 Stainless Steel, as well as other metals such as Bumax Stainless Steel, Aluminium and Titanium. For plastic bolt and other non-metal variants, we also offer Hex Bolts in Bylon, Polyamide (PA), Polyvinylidene Fluoride (PVDF), Natural Polypropylene (PP) and engineering thermoplastic PEEK. Chemical Blackening and Thread Locking Patches are also available on Stainless Steel bolts.

Imperial and Metric Ranges

A full range of imperial and metric sizes are available, and standard components range from M2 up to M36 in diameter. Lengths from 3.00mm up to 300.00mm are also available.

Stainless Steel Hex Bolt Kits

Accu's Hexagon Bolt ProKits offer a selection of different sized Stainless Steel Bolts with Washers and Nuts to suit. The Micro size kit contains M2, M2.5 & M3 bolts, whilst the Small size kit contains M4, M5 & M6 bolts. Accu's Hex Bolt Kits are available in A2 and A4 Marine Grade Stainless Steel.

What is The Difference Between a Screw and a Bolt?

One general distinction between a screw and a bolt is that bolts are driven from the outside of the head, whereas screws are operated by a central drive. Another key difference is that bolts are generally used in conjunction with unthreaded holes and secured using Nuts, but screws are fastened directly into a threaded hole. However, many customers find that there is no universal distinction between these components, and there are numerous exceptions to these rules. For more details, read our in-depth article on the difference between screws and bolts.

Bespoke Hex Bolts Manufacture

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

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