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Disc-Lock™
PartsForMachines is an Authorised Distributor and Seller for Disc-Lock, covering Disc-Lock self-locking nuts and washers for the vibration-critical fastenings on UK commercial vehicles, plant, agricultural machinery and industrial equipment. The catalogue is indexed by thread size and product family, the way locking hardware is specified.The Disc-Lock principle is mechanical rather than frictional: paired cams whose wedge angle exceeds the thread pitch, so vibration that tries to rotate the fastener loose instead drives the cams to tighten the joint. The locking washers apply that geometry under standard fasteners, and the locking nuts build it into the nut itself, including the wheel-nut applications where loosening has safety consequences, commercial and plant wheels being the classic duty. Products sell by thread size and diameter, with material and finish listed per product, reusability being part of the engineering case against single-use deformed-thread alternatives. Compare lines up sizes, and Ask Simon answers application questions, joint design and torque practice deciding outcomes as much as hardware.
Disc-Lock is an established specialist in vibration-proof fastening, its wedge-locking products proven across transport, rail, plant and industrial applications worldwide. The practical case is downtime and safety arithmetic: on joints that vibration works loose, re-torquing schedules and failed fastenings cost more than locking hardware ever will, which is why fleet engineers specify wedge-locking on the joints that have bitten them before.
