Washers
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Flat Washer
A flat round washer is used to distribute load.
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Spring WasherThe most common style of washer used to prevent nuts and bolts from backing out.
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Square WasherA square shaped washer.
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Fibre WasherA flat round washer made from vulcanised fibre. They are red in colour.
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Nylon WasherA flat round washer made from nylon. They are white or black in colour.
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Internal Toothlock / Star WasherA washer with internal 'teeth'. Used to prevent nuts and bolts from backing out.
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External Toothlock / Star Washer
A washer with external 'teeth'. Used to prevent nuts and bolts from backing out.
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Belleville WasherA Belleville washer, also known as a coned-disc spring, conical spring washer, disc spring, Belleville spring or cupped spring washer, is a type of spring shaped like a washer. It has a frusto-conical shape which gives the washer a spring characteristic.
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Nordlock Washer
Nord-Lock washers secure bolted joints with tension instead of friction. The system is comprised of a pair of washers that has cams on one side and radial teeth on the opposite side. Since the cam angle ‘α’ is greater than the thread pitch ‘β’ a wedge effect is created by the cams, preventing the bolt from rotating loose.
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Schnorr WasherThe Schnorr safety washers is a disc spring which is serrated on both sides and of trapezoidal cross section. The serrations lock the washers positively resisting vibration.
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Cup WasherA washer used to obtain a 'finished' look. Usually used with oval head screws.