946440
Flange Screw
Volvo

Flange screws play a pivotal role in securing components that require a flush mounting surface and uniform clamping force, such as exhaust manifolds, intake adapters, and various flange connections on Volvo heavy-duty engines. This fastener features a thick, integrated flange that distributes seating pressure across the joint, reducing the risk of localized stress that can lead to leaks or cracks under vibration. The design supports higher torque transfer than standard screws, helping maintain gasket seal integrity during hot start-ups and sustained highway speeds. When performing repairs or routine maintenance, flange screws provide repeatable clamping geometry, ensuring proper alignment of mating surfaces and reducing the chance of misfit that could compromise performance. Choosing the correct thread pitch and length is essential for achieving optimal engagement and avoiding thread stripping in hard-mounted assemblies. The fastener is typically supplied with corrosion-resistant finishes suited to harsh environments, offering protection against salt, moisture, and heat cycling commonly encountered in commercial trucks. For technicians, replacing flange screws in matched sets helps maintain consistent tension across joints, improving reliability and service life. Source One Parts Center.