Fasteners hold the engine together and matter far more than their cost suggests, with critical joints depending on a specified grade, torque figure and tightening sequence. This group covers bolts, screws, studs and nuts, washers, clamps and clips, dowels and pins, plugs and threaded adaptors. Perkins specifies torque-to-yield fasteners for critical joints including cylinder heads on many of its ranges; these stretch past their elastic limit on assembly and are single-use items. Perkins publishes both a torque figure and a tightening sequence for these joints, and following the sequence is as important as reaching the figure.
AMS Parts supplies a wide range of fasteners & hardware components for Perkins engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.
Browse our range of Fasteners & Hardware parts below. Use the search bar above to find a specific part number, or request a quote.
On ranges using torque-to-yield bolts, no. They are single-use and must be replaced whenever the head is removed.
No. Engine fasteners are specified to a grade and often a defined stretch behaviour. A lower-grade substitute may hold on assembly and fail later under load.
It distributes clamp load evenly and prevents distortion. Tightening out of sequence is a common cause of repeat gasket failure.
