Cylinder Head Bolts
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CYLINDER HEAD BOLTS

We are the Roll-Fast manufacture of Cylinder head bolts from M10 to M 100 or 1/2” to 4” diameters. Specially we manufacture these bolts for ship engine assembly. The cylinder head engine bolts used in automotive Industry & power transmission industry. Automotive fasteners are a collection of products that are used in automotive and vehicle assembly.

What is Cylinder Head Bolts?

The Cylinder-head bolts are the connecting elements between engine block, cylinder-head gasket, and cylinder head. We provide high torque bolts which is important in bolt tightening force is an important factor for the mutual sealing of combustion chamber, lubricant and coolant channels, and the ambient air.

Roll-Fast have in-house facility of Hot forging with up-stroke & down stroke forging machines. After that forging, we turned on these bolts on higher precision CNC Machining. We have heat treatment furnace from Dowa hightemp Japan that gives higher tensile strength on these bolts. We have in house testing facility to checking of decarburization material on threads. Also, we provide different coating on these bolts like Geomat, Zinc flake, black, Phosphate coatings etc.

We have wide range of material grade like

Grade

Diameter

Type

Application area

8.8

M10 to M100

Carbon steel / Alloy steel

Ship Engine, Automotive Engines, Mining Engine etc.

10.9

M10 to M100

Carbon steel / Alloy steel

Ship Engine, Automotive Engines, Mining Engine etc.

12.9

M10 to M100

Carbon steel / Alloy steel

Ship Engine, Automotive Engines, Mining Engine etc.

SS 304, SS316, SS 316 S31

M10 to M100

Stainless Steel

Ship Engine, Automotive Engines, Mining Engine etc.

Duplex Steel

M10 to M100

Duplex Steel

Ship Engine, Automotive Engines, Mining Engine etc.

Head Studs vs Head Bolts

For one, bolts are usually partially or fully threaded, while studs are typically threaded on both ends and often have an unthreaded middle section of the shaft. In addition, studs do not have a head, whereas bolts always do.

When evaluating the various benefits of studs and bolts, it is helpful to keep several considerations in mind. Ease of engine assembly and disassembly can be a significant factor, as well as torque pressure, gasket alignment, and overall engine performance. The power and acceleration potential of an engine often dictates the type of head fastener that will be used. We can make Head bolts 7 Studs as per your size & grade you need.

Custom Cylinder Head Bolts

Roll-fast is specialization in custom bolts manufacturing. We have CAD team which create 3D model of your bolts and make, is it feasible in every different kind of situation with help of simulation & Finite element analysis (FEA) Tools. We check your bolt in different load & jerk pressure parameter.

Any size you want just share with us and we can make it possible.

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