Uncover the Ultimate Double-Headed Stud Weight Chart

What Is Double-Headed Stud?

A double-end stud (also known as a double-headed stud) is a cylindrical fastener with threads at both ends.

The diameter, length, and quantity of double-head studs should meet specific requirements, and the type and material of the stud are determined by the grade.

Commonly used double-head studs come in two varieties (also known as all-thread studs), with threads being either coarse or fine. Coarse standard threads are represented by M and nominal diameter, whereas fine threads are represented by M, nominal diameter, and pitch.

According to fastener standards, M36 bolts use coarse threads, while bolts with diameters of M36 and above can employ fine threads, with all pitches being 3.

Double-head studs with a bm=1d value are generally used for connections between two steel components; bm=1.25d and bm=1.5d studs are typically used for connections between cast iron and steel components; bm=2d studs are typically used for connections between aluminum alloy and steel components. The former type of component features internal threaded holes, while the latter type has through holes.

Equal-length double-head studs require both ends to thread into a nut and washer, and are used for two components with through holes. Weld studs are welded onto the surface of one component at one end, and the other end (threaded end) passes through the component with the through hole, then a washer is fitted and a nut is screwed on, connecting the two components into a single unit.

Double-headed bolts are manufactured in accordance with standards GB897-GB901, using materials such as Q235, 45#, 40Cr, 35CrMoA, and Q345D.

They come in sizes ranging from M3mm to M100mm, with length customization available based on user needs.

High-strength double-headed bolts are made from materials like 35#, 45#, 35CrMoA, 25Cr2MoV, 304, 316, 304L, 316L, 2H, 2HM, B7, B7M, B16, B8, B8M, and 8M.

They are widely used in industries such as power generation, chemical processing, oil refining, valve manufacturing, railways, bridge construction, steel structures, and automotive parts.

The function of double-headed bolts includes usage in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, towers, large-span steel structures, and large buildings.

Double-Headed Stud Weight Chart

(Unit: kg/1000 pieces)